400906104 has 32 divisors (see below), whose sum is σ = 1061223120. Its totient is φ = 125774336.

The previous prime is 400906097. The next prime is 400906109. The reversal of 400906104 is 401609004.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400906109) 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, 490899 + ... + 491714.

Almost surely, 2^400906104 is an apocalyptic number.

It is an amenable number.

400906104 is an abundant number, since it is smaller than the sum of its proper divisors (660317016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400906104 is a wasteful number, since it uses less digits than its factorization.

400906104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982639 (or 982635 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 400906104 is about 20022.6397860022. The cubic root of 400906104 is about 737.3622327744.

The spelling of 400906104 in words is "four hundred million, nine hundred six thousand, one hundred four".