400740597 has 6 divisors (see below), whose sum is σ = 578847542. Its totient is φ = 267160392.

The previous prime is 400740559. The next prime is 400740617. The reversal of 400740597 is 795047004.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 359254116 + 41486481 = 18954^2 + 6441^2 .

It is not a de Polignac number, because 400740597 - 2¹⁸ = 400478453 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 (400740097) 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 5 ways as a sum of consecutive naturals, for example, 22263358 + ... + 22263375.

Almost surely, 2^400740597 is an apocalyptic number.

It is an amenable number.

400740597 is a deficient number, since it is larger than the sum of its proper divisors (178106945).

400740597 is a wasteful number, since it uses less digits than its factorization.

400740597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44526739 (or 44526736 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 400740597 is about 20018.5063628633. The cubic root of 400740597 is about 737.2607498190.

The spelling of 400740597 in words is "four hundred million, seven hundred forty thousand, five hundred ninety-seven".