400396925 has 12 divisors (see below), whose sum is σ = 496753920. Its totient is φ = 320148720.

The previous prime is 400396879. The next prime is 400396933. The reversal of 400396925 is 529693004.

It is not a de Polignac number, because 400396925 - 2¹² = 400392829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69194 + ... + 74756.

It is an arithmetic number, because the mean of its divisors is an integer number (41396160).

Almost surely, 2^400396925 is an apocalyptic number.

It is an amenable number.

400396925 is a deficient number, since it is larger than the sum of its proper divisors (96356995).

400396925 is a wasteful number, since it uses less digits than its factorization.

400396925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8452 (or 8447 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 400396925 is about 20009.9206645104. The cubic root of 400396925 is about 737.0499331928.

It can be divided in two parts, 40039 and 6925, that added together give a palindrome (46964).

The spelling of 400396925 in words is "four hundred million, three hundred ninety-six thousand, nine hundred twenty-five".