137440407 has 8 divisors (see below), whose sum is σ = 197350384. Its totient is φ = 84578688.

The previous prime is 137440403. The next prime is 137440411. The reversal of 137440407 is 704044731.

It is an interprime number because it is at equal distance from previous prime (137440403) and next prime (137440411).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 137440407 - 2² = 137440403 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 (137440403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1762018 + ... + 1762095.

It is an arithmetic number, because the mean of its divisors is an integer number (24668798).

Almost surely, 2^137440407 is an apocalyptic number.

137440407 is a deficient number, since it is larger than the sum of its proper divisors (59909977).

137440407 is a wasteful number, since it uses less digits than its factorization.

137440407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3524129.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 137440407 is about 11723.4980701154. The cubic root of 137440407 is about 516.0654812939.

The spelling of 137440407 in words is "one hundred thirty-seven million, four hundred forty thousand, four hundred seven".