22405949 has 8 divisors (see below), whose sum is σ = 23850360. Its totient is φ = 20975616.

The previous prime is 22405937. The next prime is 22405961. The reversal of 22405949 is 94950422.

It is an interprime number because it is at equal distance from previous prime (22405937) and next prime (22405961).

It can be written as a sum of positive squares in 4 ways, for example, as 3829849 + 18576100 = 1957^2 + 4310^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22405949 - 2¹² = 22401853 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 (22405919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134 + ... + 6695.

It is an arithmetic number, because the mean of its divisors is an integer number (2981295).

Almost surely, 2^22405949 is an apocalyptic number.

It is an amenable number.

22405949 is a deficient number, since it is larger than the sum of its proper divisors (1444411).

22405949 is a wasteful number, since it uses less digits than its factorization.

22405949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7039.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 22405949 is about 4733.4922625901. The cubic root of 22405949 is about 281.9169020619.

The spelling of 22405949 in words is "twenty-two million, four hundred five thousand, nine hundred forty-nine".