23474749 has 2 divisors, whose sum is σ = 23474750. Its totient is φ = 23474748.

The previous prime is 23474741. The next prime is 23474767. The reversal of 23474749 is 94747432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16345849 + 7128900 = 4043^2 + 2670^2 .

It is a cyclic number.

It is not a de Polignac number, because 23474749 - 2³ = 23474741 is a prime.

It is a super-2 number, since 2×23474749² = 1102127681226002, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23474741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11737374 + 11737375.

It is an arithmetic number, because the mean of its divisors is an integer number (11737375).

Almost surely, 2^23474749 is an apocalyptic number.

It is an amenable number.

23474749 is a deficient number, since it is larger than the sum of its proper divisors (1).

23474749 is an equidigital number, since it uses as much as digits as its factorization.

23474749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 40.

The square root of 23474749 is about 4845.0747156262. The cubic root of 23474749 is about 286.3300873651.

The spelling of 23474749 in words is "twenty-three million, four hundred seventy-four thousand, seven hundred forty-nine".