400900893 has 16 divisors (see below), whose sum is σ = 563258880. Its totient is φ = 252934704.

The previous prime is 400900867. The next prime is 400900909. The reversal of 400900893 is 398009004.

It is not a de Polignac number, because 400900893 - 2⁸ = 400900637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400900853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60880 + ... + 67142.

It is an arithmetic number, because the mean of its divisors is an integer number (35203680).

Almost surely, 2^400900893 is an apocalyptic number.

It is an amenable number.

400900893 is a deficient number, since it is larger than the sum of its proper divisors (162357987).

400900893 is a wasteful number, since it uses less digits than its factorization.

400900893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7408.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 400900893 is about 20022.5096578826. The cubic root of 400900893 is about 737.3590380020.

Adding to 400900893 its reverse (398009004), we get a palindrome (798909897).

The spelling of 400900893 in words is "four hundred million, nine hundred thousand, eight hundred ninety-three".