23099749 has 2 divisors, whose sum is σ = 23099750. Its totient is φ = 23099748.

The previous prime is 23099737. The next prime is 23099761. The reversal of 23099749 is 94799032.

It is a balanced prime because it is at equal distance from previous prime (23099737) and next prime (23099761).

It can be written as a sum of positive squares in only one way, i.e., 11607649 + 11492100 = 3407^2 + 3390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23099749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23099789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11549874 + 11549875.

It is an arithmetic number, because the mean of its divisors is an integer number (11549875).

Almost surely, 2^23099749 is an apocalyptic number.

It is an amenable number.

23099749 is a deficient number, since it is larger than the sum of its proper divisors (1).

23099749 is an equidigital number, since it uses as much as digits as its factorization.

23099749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 23099749 is about 4806.2198243526. The cubic root of 23099749 is about 284.7972252089.

The spelling of 23099749 in words is "twenty-three million, ninety-nine thousand, seven hundred forty-nine".