400994124 has 12 divisors (see below), whose sum is σ = 935652984. Its totient is φ = 133664704.

The previous prime is 400994119. The next prime is 400994137. The reversal of 400994124 is 421499004.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16708077 + ... + 16708100.

It is an arithmetic number, because the mean of its divisors is an integer number (77971082).

Almost surely, 2^400994124 is an apocalyptic number.

It is an amenable number.

400994124 is an abundant number, since it is smaller than the sum of its proper divisors (534658860).

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

400994124 is a wasteful number, since it uses less digits than its factorization.

400994124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33416184 (or 33416182 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 400994124 is about 20024.8376772447. The cubic root of 400994124 is about 737.4161921045.

The spelling of 400994124 in words is "four hundred million, nine hundred ninety-four thousand, one hundred twenty-four".