397426716 has 24 divisors (see below), whose sum is σ = 1030365840. Its totient is φ = 132475536.

The previous prime is 397426709. The next prime is 397426721. The reversal of 397426716 is 617624793.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1839831 + ... + 1840046.

It is an arithmetic number, because the mean of its divisors is an integer number (42931910).

Almost surely, 2^397426716 is an apocalyptic number.

397426716 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

397426716 is an abundant number, since it is smaller than the sum of its proper divisors (632939124).

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

397426716 is a wasteful number, since it uses less digits than its factorization.

397426716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3679890 (or 3679882 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 397426716 is about 19935.5641003710. The cubic root of 397426716 is about 735.2228895029. Note that the first 3 decimals are identical.

The spelling of 397426716 in words is "three hundred ninety-seven million, four hundred twenty-six thousand, seven hundred sixteen".