400601465 has 16 divisors (see below), whose sum is σ = 547226496. Its totient is φ = 278678400.

The previous prime is 400601431. The next prime is 400601471. The reversal of 400601465 is 564106004.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-400601465 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157076 + ... + 159605.

It is an arithmetic number, because the mean of its divisors is an integer number (34201656).

Almost surely, 2^400601465 is an apocalyptic number.

It is an amenable number.

400601465 is a deficient number, since it is larger than the sum of its proper divisors (146625031).

400601465 is a wasteful number, since it uses less digits than its factorization.

400601465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316720.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 400601465 is about 20015.0309767435. The cubic root of 400601465 is about 737.1754174479.

Adding to 400601465 its reverse (564106004), we get a palindrome (964707469).

The spelling of 400601465 in words is "four hundred million, six hundred one thousand, four hundred sixty-five".