397759194 has 64 divisors (see below), whose sum is σ = 1054126080. Its totient is φ = 108702000.

The previous prime is 397759181. The next prime is 397759199. The reversal of 397759194 is 491957793.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 397759194.

It is not an unprimeable number, because it can be changed into a prime (397759199) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 14182 + ... + 31569.

It is an arithmetic number, because the mean of its divisors is an integer number (16470720).

Almost surely, 2^397759194 is an apocalyptic number.

397759194 is an abundant number, since it is smaller than the sum of its proper divisors (656366886).

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

397759194 is a wasteful number, since it uses less digits than its factorization.

397759194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45792 (or 45786 counting only the distinct ones).

The product of its digits is 2143260, while the sum is 54.

The square root of 397759194 is about 19943.9011730403. The cubic root of 397759194 is about 735.4278558459.

The spelling of 397759194 in words is "three hundred ninety-seven million, seven hundred fifty-nine thousand, one hundred ninety-four".