23533949 has 2 divisors, whose sum is σ = 23533950. Its totient is φ = 23533948.

The previous prime is 23533931. The next prime is 23533969. The reversal of 23533949 is 94933532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23522500 + 11449 = 4850^2 + 107^2 .

It is a cyclic number.

It is not a de Polignac number, because 23533949 - 2⁸ = 23533693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23533919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11766974 + 11766975.

It is an arithmetic number, because the mean of its divisors is an integer number (11766975).

Almost surely, 2^23533949 is an apocalyptic number.

It is an amenable number.

23533949 is a deficient number, since it is larger than the sum of its proper divisors (1).

23533949 is an equidigital number, since it uses as much as digits as its factorization.

23533949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 38.

The square root of 23533949 is about 4851.1801656916. The cubic root of 23533949 is about 286.5705799895.

It can be divided in two parts, 235 and 33949, that multiplied together give a triangular number (7978015 = T₃₉₉₄).

The spelling of 23533949 in words is "twenty-three million, five hundred thirty-three thousand, nine hundred forty-nine".