2372409 has 24 divisors (see below), whose sum is σ = 3832192. Its totient is φ = 1458000.

The previous prime is 2372393. The next prime is 2372413. The reversal of 2372409 is 9042732.

It is not a de Polignac number, because 2372409 - 2⁴ = 2372393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2372459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2784 + ... + 3534.

2^2372409 is an apocalyptic number.

It is an amenable number.

2372409 is a deficient number, since it is larger than the sum of its proper divisors (1459783).

2372409 is an equidigital number, since it uses as much as digits as its factorization.

2372409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 2372409 is about 1540.2626399416. The cubic root of 2372409 is about 133.3715466859.

The spelling of 2372409 in words is "two million, three hundred seventy-two thousand, four hundred nine".