397493796 has 96 divisors (see below), whose sum is σ = 1129524480. Its totient is φ = 106205184.

The previous prime is 397493777. The next prime is 397493809. The reversal of 397493796 is 697394793.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 246240 + ... + 247848.

It is an arithmetic number, because the mean of its divisors is an integer number (11765880).

Almost surely, 2^397493796 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397493796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (564762240).

397493796 is an abundant number, since it is smaller than the sum of its proper divisors (732030684).

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

397493796 is a wasteful number, since it uses less digits than its factorization.

397493796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813 (or 1811 counting only the distinct ones).

The product of its digits is 7715736, while the sum is 57.

The square root of 397493796 is about 19937.2464497984. The cubic root of 397493796 is about 735.2642522455.

The spelling of 397493796 in words is "three hundred ninety-seven million, four hundred ninety-three thousand, seven hundred ninety-six".