22997409 has 16 divisors (see below), whose sum is σ = 31314432. Its totient is φ = 15009408.

The previous prime is 22997393. The next prime is 22997417. The reversal of 22997409 is 90479922.

It is not a de Polignac number, because 22997409 - 2⁴ = 22997393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22997419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37584 + ... + 38190.

It is an arithmetic number, because the mean of its divisors is an integer number (1957152).

Almost surely, 2^22997409 is an apocalyptic number.

It is an amenable number.

22997409 is a deficient number, since it is larger than the sum of its proper divisors (8317023).

22997409 is a wasteful number, since it uses less digits than its factorization.

22997409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 22997409 is about 4795.5613852812. The cubic root of 22997409 is about 284.3760186575.

The spelling of 22997409 in words is "twenty-two million, nine hundred ninety-seven thousand, four hundred nine".