400900895 has 4 divisors (see below), whose sum is σ = 481081080. Its totient is φ = 320720712.

The previous prime is 400900867. The next prime is 400900909. The reversal of 400900895 is 598009004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400900895 - 2⁶ = 400900831 is a prime.

It is a super-2 number, since 2×400900895² = 321443055223602050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 40090085 + ... + 40090094.

It is an arithmetic number, because the mean of its divisors is an integer number (120270270).

Almost surely, 2^400900895 is an apocalyptic number.

400900895 is a deficient number, since it is larger than the sum of its proper divisors (80180185).

400900895 is an equidigital number, since it uses as much as digits as its factorization.

400900895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80180184.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 400900895 is about 20022.5097078263. The cubic root of 400900895 is about 737.3590392282.

Adding to 400900895 its reverse (598009004), we get a palindrome (998909899).

The spelling of 400900895 in words is "four hundred million, nine hundred thousand, eight hundred ninety-five".