400465641 has 8 divisors (see below), whose sum is σ = 562057120. Its totient is φ = 252925632.

The previous prime is 400465613. The next prime is 400465649. The reversal of 400465641 is 146564004.

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

It is not a de Polignac number, because 400465641 - 2⁵ = 400465609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400465599 and 400465608.

It is not an unprimeable number, because it can be changed into a prime (400465649) 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, 3512800 + ... + 3512913.

It is an arithmetic number, because the mean of its divisors is an integer number (70257140).

Almost surely, 2^400465641 is an apocalyptic number.

It is an amenable number.

400465641 is a deficient number, since it is larger than the sum of its proper divisors (161591479).

400465641 is a wasteful number, since it uses less digits than its factorization.

400465641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7025735.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 400465641 is about 20011.6376391339. The cubic root of 400465641 is about 737.0920948770.

The spelling of 400465641 in words is "four hundred million, four hundred sixty-five thousand, six hundred forty-one".