372243397 has 2 divisors, whose sum is σ = 372243398. Its totient is φ = 372243396.

The previous prime is 372243359. The next prime is 372243461. The reversal of 372243397 is 793342273.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248566756 + 123676641 = 15766^2 + 11121^2 .

It is an emirp because it is prime and its reverse (793342273) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-372243397 is a prime.

It is a super-2 number, since 2×372243397² = 277130293220199218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (372243317) by changing a digit.

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 as a sum of consecutive naturals, namely, 186121698 + 186121699.

It is an arithmetic number, because the mean of its divisors is an integer number (186121699).

Almost surely, 2^372243397 is an apocalyptic number.

It is an amenable number.

372243397 is a deficient number, since it is larger than the sum of its proper divisors (1).

372243397 is an equidigital number, since it uses as much as digits as its factorization.

372243397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 40.

The square root of 372243397 is about 19293.6102635043. The cubic root of 372243397 is about 719.3534557280.

The spelling of 372243397 in words is "three hundred seventy-two million, two hundred forty-three thousand, three hundred ninety-seven".