400450708 has 24 divisors (see below), whose sum is σ = 848014272. Its totient is φ = 161526144.

The previous prime is 400450693. The next prime is 400450709. The reversal of 400450708 is 807054004.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400450709) 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, 420166 + ... + 421117.

It is an arithmetic number, because the mean of its divisors is an integer number (35333928).

Almost surely, 2^400450708 is an apocalyptic number.

It is an amenable number.

400450708 is an abundant number, since it is smaller than the sum of its proper divisors (447563564).

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

400450708 is a wasteful number, since it uses less digits than its factorization.

400450708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841311 (or 841309 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 400450708 is about 20011.2645277604. The cubic root of 400450708 is about 737.0829329315.

The spelling of 400450708 in words is "four hundred million, four hundred fifty thousand, seven hundred eight".