22479407 has 4 divisors (see below), whose sum is σ = 22501656. Its totient is φ = 22457160.

The previous prime is 22479403. The next prime is 22479409. The reversal of 22479407 is 70497422.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70497422 = 2 ⋅35248711.

It is a cyclic number.

It is not a de Polignac number, because 22479407 - 2² = 22479403 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 (22479403) 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, 9533 + ... + 11654.

It is an arithmetic number, because the mean of its divisors is an integer number (5625414).

Almost surely, 2^22479407 is an apocalyptic number.

22479407 is a deficient number, since it is larger than the sum of its proper divisors (22249).

22479407 is a wasteful number, since it uses less digits than its factorization.

22479407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22248.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 22479407 is about 4741.2453005513. The cubic root of 22479407 is about 282.2246545752.

The spelling of 22479407 in words is "twenty-two million, four hundred seventy-nine thousand, four hundred seven".