372121397 has 2 divisors, whose sum is σ = 372121398. Its totient is φ = 372121396.

The previous prime is 372121367. The next prime is 372121429. The reversal of 372121397 is 793121273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371371441 + 749956 = 19271^2 + 866^2 .

It is a cyclic number.

It is not a de Polignac number, because 372121397 - 2⁶ = 372121333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (372121307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186060698 + 186060699.

It is an arithmetic number, because the mean of its divisors is an integer number (186060699).

Almost surely, 2^372121397 is an apocalyptic number.

It is an amenable number.

372121397 is a deficient number, since it is larger than the sum of its proper divisors (1).

372121397 is an equidigital number, since it uses as much as digits as its factorization.

372121397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 35.

The square root of 372121397 is about 19290.4483358993. The cubic root of 372121397 is about 719.2748595624.

The spelling of 372121397 in words is "three hundred seventy-two million, one hundred twenty-one thousand, three hundred ninety-seven".