372981997 has 4 divisors (see below), whose sum is σ = 377475840. Its totient is φ = 368488156.

The previous prime is 372981953. The next prime is 372982009. The reversal of 372981997 is 799189273.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 799189273 = 14653 ⋅54541.

It is a cyclic number.

It is not a de Polignac number, because 372981997 - 2²³ = 364593389 is a prime.

It is a super-2 number, since 2×372981997² = 278231140172216018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (372981937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2246797 + ... + 2246962.

It is an arithmetic number, because the mean of its divisors is an integer number (94368960).

Almost surely, 2^372981997 is an apocalyptic number.

It is an amenable number.

372981997 is a deficient number, since it is larger than the sum of its proper divisors (4493843).

372981997 is an equidigital number, since it uses as much as digits as its factorization.

372981997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4493842.

The product of its digits is 1714608, while the sum is 55.

The square root of 372981997 is about 19312.7418302011. The cubic root of 372981997 is about 719.8289183283.

The spelling of 372981997 in words is "three hundred seventy-two million, nine hundred eighty-one thousand, nine hundred ninety-seven".