23291949 has 4 divisors (see below), whose sum is σ = 31055936. Its totient is φ = 15527964.

The previous prime is 23291941. The next prime is 23291953. The reversal of 23291949 is 94919232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23291949 - 2³ = 23291941 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 (23291941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3881989 + ... + 3881994.

It is an arithmetic number, because the mean of its divisors is an integer number (7763984).

Almost surely, 2^23291949 is an apocalyptic number.

It is an amenable number.

23291949 is a deficient number, since it is larger than the sum of its proper divisors (7763987).

23291949 is an equidigital number, since it uses as much as digits as its factorization.

23291949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7763986.

The product of its digits is 34992, while the sum is 39.

The square root of 23291949 is about 4826.1733288393. The cubic root of 23291949 is about 285.5849236641.

It can be divided in two parts, 2329 and 1949, that added together give a triangular number (4278 = T₉₂).

The spelling of 23291949 in words is "twenty-three million, two hundred ninety-one thousand, nine hundred forty-nine".