22497949 has 4 divisors (see below), whose sum is σ = 22536864. Its totient is φ = 22459036.

The previous prime is 22497941. The next prime is 22497977. The reversal of 22497949 is 94979422.

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 a cyclic number.

It is not a de Polignac number, because 22497949 - 2³ = 22497941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22497899 and 22497908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22497941) 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, 18577 + ... + 19750.

It is an arithmetic number, because the mean of its divisors is an integer number (5634216).

Almost surely, 2^22497949 is an apocalyptic number.

It is an amenable number.

22497949 is a deficient number, since it is larger than the sum of its proper divisors (38915).

22497949 is an equidigital number, since it uses as much as digits as its factorization.

22497949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38914.

The product of its digits is 326592, while the sum is 46.

The square root of 22497949 is about 4743.2002909428. The cubic root of 22497949 is about 282.3022303374.

The spelling of 22497949 in words is "twenty-two million, four hundred ninety-seven thousand, nine hundred forty-nine".