137940463 has 4 divisors (see below), whose sum is σ = 138854128. Its totient is φ = 137026800.

The previous prime is 137940457. The next prime is 137940469. The reversal of 137940463 is 364049731.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (137940457) and next prime (137940469).

It is a cyclic number.

It is not a de Polignac number, because 137940463 - 2⁹ = 137939951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137940469) 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, 456606 + ... + 456907.

It is an arithmetic number, because the mean of its divisors is an integer number (34713532).

Almost surely, 2^137940463 is an apocalyptic number.

137940463 is a deficient number, since it is larger than the sum of its proper divisors (913665).

137940463 is an equidigital number, since it uses as much as digits as its factorization.

137940463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913664.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 137940463 is about 11744.8057880920. The cubic root of 137940463 is about 516.6905990070.

The spelling of 137940463 in words is "one hundred thirty-seven million, nine hundred forty thousand, four hundred sixty-three".