22407839 has 4 divisors (see below), whose sum is σ = 22417824. Its totient is φ = 22397856.

The previous prime is 22407809. The next prime is 22407841. The reversal of 22407839 is 93870422.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 93870422 = 2 ⋅46935211.

It is a cyclic number.

It is not a de Polignac number, because 22407839 - 2¹⁶ = 22342303 is a prime.

It is a super-2 number, since 2×22407839² = 1004222497299842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22407799 and 22407808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22407809) 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, 119 + ... + 6695.

It is an arithmetic number, because the mean of its divisors is an integer number (5604456).

Almost surely, 2^22407839 is an apocalyptic number.

22407839 is a deficient number, since it is larger than the sum of its proper divisors (9985).

22407839 is an equidigital number, since it uses as much as digits as its factorization.

22407839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9984.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 22407839 is about 4733.6918995642. The cubic root of 22407839 is about 281.9248286467.

The spelling of 22407839 in words is "twenty-two million, four hundred seven thousand, eight hundred thirty-nine".