23047399 has 4 divisors (see below), whose sum is σ = 24260440. Its totient is φ = 21834360.

The previous prime is 23047363. The next prime is 23047417. The reversal of 23047399 is 99374032.

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

It is a cyclic number.

It is not a de Polignac number, because 23047399 - 2¹³ = 23039207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23047309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606492 + ... + 606529.

It is an arithmetic number, because the mean of its divisors is an integer number (6065110).

Almost surely, 2^23047399 is an apocalyptic number.

23047399 is a deficient number, since it is larger than the sum of its proper divisors (1213041).

23047399 is a wasteful number, since it uses less digits than its factorization.

23047399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213040.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 23047399 is about 4800.7706672992. The cubic root of 23047399 is about 284.5819211149.

The spelling of 23047399 in words is "twenty-three million, forty-seven thousand, three hundred ninety-nine".