137894747 has 4 divisors (see below), whose sum is σ = 138901416. Its totient is φ = 136888080.

The previous prime is 137894707. The next prime is 137894749. The reversal of 137894747 is 747498731.

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

It is a cyclic number.

It is not a de Polignac number, because 137894747 - 2¹⁸ = 137632603 is a prime.

It is a super-2 number, since 2×137894747² = 38029922500388018, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137894695 and 137894704.

It is not an unprimeable number, because it can be changed into a prime (137894749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503129 + ... + 503402.

It is an arithmetic number, because the mean of its divisors is an integer number (34725354).

Almost surely, 2^137894747 is an apocalyptic number.

137894747 is a deficient number, since it is larger than the sum of its proper divisors (1006669).

137894747 is a wasteful number, since it uses less digits than its factorization.

137894747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006668.

The product of its digits is 1185408, while the sum is 50.

The square root of 137894747 is about 11742.8594047617. The cubic root of 137894747 is about 516.6335124523.

The spelling of 137894747 in words is "one hundred thirty-seven million, eight hundred ninety-four thousand, seven hundred forty-seven".