372342409 has 2 divisors, whose sum is σ = 372342410. Its totient is φ = 372342408.

The previous prime is 372342391. The next prime is 372342463. The reversal of 372342409 is 904243273.

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., 361760400 + 10582009 = 19020^2 + 3253^2 .

It is an emirp because it is prime and its reverse (904243273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 372342409 - 2¹⁷ = 372211337 is a prime.

It is not a weakly prime, because it can be changed into another prime (372342809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186171204 + 186171205.

It is an arithmetic number, because the mean of its divisors is an integer number (186171205).

Almost surely, 2^372342409 is an apocalyptic number.

It is an amenable number.

372342409 is a deficient number, since it is larger than the sum of its proper divisors (1).

372342409 is an equidigital number, since it uses as much as digits as its factorization.

372342409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 372342409 is about 19296.1760201341. The cubic root of 372342409 is about 719.4172296914.

The spelling of 372342409 in words is "three hundred seventy-two million, three hundred forty-two thousand, four hundred nine".