23494409 has 4 divisors (see below), whose sum is σ = 23508804. Its totient is φ = 23480016.

The previous prime is 23494399. The next prime is 23494411. The reversal of 23494409 is 90449432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18966025 + 4528384 = 4355^2 + 2128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23494409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23494489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4382 + ... + 8135.

It is an arithmetic number, because the mean of its divisors is an integer number (5877201).

Almost surely, 2^23494409 is an apocalyptic number.

It is an amenable number.

23494409 is a deficient number, since it is larger than the sum of its proper divisors (14395).

23494409 is a wasteful number, since it uses less digits than its factorization.

23494409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14394.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 23494409 is about 4847.1031554940. The cubic root of 23494409 is about 286.4099984611.

The spelling of 23494409 in words is "twenty-three million, four hundred ninety-four thousand, four hundred nine".