400749895 has 32 divisors (see below), whose sum is σ = 605670912. Its totient is φ = 247750272.

The previous prime is 400749883. The next prime is 400749913. The reversal of 400749895 is 598947004.

It is not a de Polignac number, because 400749895 - 2¹¹ = 400747847 is a prime.

It is a super-2 number, since 2×400749895² = 321200956685022050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9324 + ... + 29806.

It is an arithmetic number, because the mean of its divisors is an integer number (18927216).

Almost surely, 2^400749895 is an apocalyptic number.

400749895 is a deficient number, since it is larger than the sum of its proper divisors (204921017).

400749895 is a wasteful number, since it uses less digits than its factorization.

400749895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20551.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 400749895 is about 20018.7385966249. The cubic root of 400749895 is about 737.2664517598.

The spelling of 400749895 in words is "four hundred million, seven hundred forty-nine thousand, eight hundred ninety-five".