23420439 has 24 divisors (see below), whose sum is σ = 39106080. Its totient is φ = 13229568.

The previous prime is 23420437. The next prime is 23420443. The reversal of 23420439 is 93402432.

It is a happy number.

It is not a de Polignac number, because 23420439 - 2¹ = 23420437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23420437) 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, 3519 + ... + 7695.

It is an arithmetic number, because the mean of its divisors is an integer number (1629420).

Almost surely, 2^23420439 is an apocalyptic number.

23420439 is a deficient number, since it is larger than the sum of its proper divisors (15685641).

23420439 is a wasteful number, since it uses less digits than its factorization.

23420439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279 (or 4276 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 23420439 is about 4839.4668094740. The cubic root of 23420439 is about 286.1091038900.

The spelling of 23420439 in words is "twenty-three million, four hundred twenty thousand, four hundred thirty-nine".