22393949 has 4 divisors (see below), whose sum is σ = 22870464. Its totient is φ = 21917436.

The previous prime is 22393939. The next prime is 22393957. The reversal of 22393949 is 94939322.

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 22393949 - 2⁴ = 22393933 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 (22393909) 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, 238187 + ... + 238280.

It is an arithmetic number, because the mean of its divisors is an integer number (5717616).

Almost surely, 2^22393949 is an apocalyptic number.

It is an amenable number.

22393949 is a deficient number, since it is larger than the sum of its proper divisors (476515).

22393949 is an equidigital number, since it uses as much as digits as its factorization.

22393949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476514.

The product of its digits is 104976, while the sum is 41.

The square root of 22393949 is about 4732.2245297534. The cubic root of 22393949 is about 281.8665641368.

The spelling of 22393949 in words is "twenty-two million, three hundred ninety-three thousand, nine hundred forty-nine".