137983469 has 4 divisors (see below), whose sum is σ = 148597596. Its totient is φ = 127369344.

The previous prime is 137983457. The next prime is 137983481. The reversal of 137983469 is 964389731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 964389731 = 9803 ⋅98377.

It is an interprime number because it is at equal distance from previous prime (137983457) and next prime (137983481).

It can be written as a sum of positive squares in 2 ways, for example, as 7155625 + 130827844 = 2675^2 + 11438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137983469 is a prime.

It is a super-2 number, since 2×137983469² = 38078875434547922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137983429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5307044 + ... + 5307069.

It is an arithmetic number, because the mean of its divisors is an integer number (37149399).

Almost surely, 2^137983469 is an apocalyptic number.

It is an amenable number.

137983469 is a deficient number, since it is larger than the sum of its proper divisors (10614127).

137983469 is a wasteful number, since it uses less digits than its factorization.

137983469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10614126.

The product of its digits is 979776, while the sum is 50.

The square root of 137983469 is about 11746.6364973128. The cubic root of 137983469 is about 516.7442900139.

It can be divided in two parts, 1379 and 83469, that added together give a palindrome (84848).

The spelling of 137983469 in words is "one hundred thirty-seven million, nine hundred eighty-three thousand, four hundred sixty-nine".