400601597 has 6 divisors (see below), whose sum is σ = 440330814. Its totient is φ = 364183160.

The previous prime is 400601581. The next prime is 400601629. The reversal of 400601597 is 795106004.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 281769796 + 118831801 = 16786^2 + 10901^2 .

It is not a de Polignac number, because 400601597 - 2⁴ = 400601581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400601497) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1655258 + ... + 1655499.

It is an arithmetic number, because the mean of its divisors is an integer number (73388469).

Almost surely, 2^400601597 is an apocalyptic number.

It is an amenable number.

400601597 is a deficient number, since it is larger than the sum of its proper divisors (39729217).

400601597 is a wasteful number, since it uses less digits than its factorization.

400601597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3310779 (or 3310768 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 400601597 is about 20015.0342742649. The cubic root of 400601597 is about 737.1754984155.

The spelling of 400601597 in words is "four hundred million, six hundred one thousand, five hundred ninety-seven".