137747407 has 4 divisors (see below), whose sum is σ = 157425616. Its totient is φ = 118069200.

The previous prime is 137747329. The next prime is 137747443. The reversal of 137747407 is 704747731.

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 137747407 - 2⁷ = 137747279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137747407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137747497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9839094 + ... + 9839107.

It is an arithmetic number, because the mean of its divisors is an integer number (39356404).

Almost surely, 2^137747407 is an apocalyptic number.

137747407 is a deficient number, since it is larger than the sum of its proper divisors (19678209).

137747407 is an equidigital number, since it uses as much as digits as its factorization.

137747407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19678208.

The product of its (nonzero) digits is 115248, while the sum is 40.

The square root of 137747407 is about 11736.5841282717. The cubic root of 137747407 is about 516.4494399113.

It can be divided in two parts, 1377 and 47407, that added together give a palindrome (48784).

The spelling of 137747407 in words is "one hundred thirty-seven million, seven hundred forty-seven thousand, four hundred seven".