397942446 has 16 divisors (see below), whose sum is σ = 868238208. Its totient is φ = 120588600.

The previous prime is 397942439. The next prime is 397942453. The reversal of 397942446 is 644249793.

It is an interprime number because it is at equal distance from previous prime (397942439) and next prime (397942453).

It is a junction number, because it is equal to n+sod(n) for n = 397942395 and 397942404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3014650 + ... + 3014781.

It is an arithmetic number, because the mean of its divisors is an integer number (54264888).

Almost surely, 2^397942446 is an apocalyptic number.

397942446 is an abundant number, since it is smaller than the sum of its proper divisors (470295762).

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

397942446 is a wasteful number, since it uses less digits than its factorization.

397942446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6029447.

The product of its digits is 1306368, while the sum is 48.

The square root of 397942446 is about 19948.4948304377. The cubic root of 397942446 is about 735.5407783849.

The spelling of 397942446 in words is "three hundred ninety-seven million, nine hundred forty-two thousand, four hundred forty-six".