400814890 has 16 divisors (see below), whose sum is σ = 824533632. Its totient is φ = 137422224.

The previous prime is 400814879. The next prime is 400814891. The reversal of 400814890 is 98418004.

It is not an unprimeable number, because it can be changed into a prime (400814891) 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, 2862894 + ... + 2863033.

It is an arithmetic number, because the mean of its divisors is an integer number (51533352).

Almost surely, 2^400814890 is an apocalyptic number.

400814890 is an abundant number, since it is smaller than the sum of its proper divisors (423718742).

400814890 is a wasteful number, since it uses less digits than its factorization.

400814890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5725941.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 400814890 is about 20020.3618848411. The cubic root of 400814890 is about 737.3063070771.

The spelling of 400814890 in words is "four hundred million, eight hundred fourteen thousand, eight hundred ninety".