397651444 has 24 divisors (see below), whose sum is σ = 715513568. Its totient is φ = 193263840.

The previous prime is 397651433. The next prime is 397651481. The reversal of 397651444 is 444156793.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 397651444.

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 7 ways as a sum of consecutive naturals, for example, 30814 + ... + 41770.

Almost surely, 2^397651444 is an apocalyptic number.

It is an amenable number.

397651444 is a deficient number, since it is larger than the sum of its proper divisors (317862124).

397651444 is a wasteful number, since it uses less digits than its factorization.

397651444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11215 (or 11213 counting only the distinct ones).

The product of its digits is 362880, while the sum is 43.

The square root of 397651444 is about 19941.1996630092. The cubic root of 397651444 is about 735.3614425409.

It can be divided in two parts, 39765 and 1444, that added together give a square (41209 = 203²).

The spelling of 397651444 in words is "three hundred ninety-seven million, six hundred fifty-one thousand, four hundred forty-four".