397444408 has 16 divisors (see below), whose sum is σ = 761064480. Its totient is φ = 194493888.

The previous prime is 397444381. The next prime is 397444409. The reversal of 397444408 is 804444793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397444409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528141 + ... + 528892.

It is an arithmetic number, because the mean of its divisors is an integer number (47566530).

Almost surely, 2^397444408 is an apocalyptic number.

It is an amenable number.

397444408 is a deficient number, since it is larger than the sum of its proper divisors (363620072).

397444408 is a wasteful number, since it uses less digits than its factorization.

397444408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057086 (or 1057082 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 43.

The square root of 397444408 is about 19936.0078250386. The cubic root of 397444408 is about 735.2337991623.

It can be divided in two parts, 39 and 7444408, that added together give a palindrome (7444447).

The spelling of 397444408 in words is "three hundred ninety-seven million, four hundred forty-four thousand, four hundred eight".