22970509 has 4 divisors (see below), whose sum is σ = 22984000. Its totient is φ = 22957020.

The previous prime is 22970503. The next prime is 22970539. The reversal of 22970509 is 90507922.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90507922 = 2 ⋅45253961.

It is a cyclic number.

It is not a de Polignac number, because 22970509 - 2⁹ = 22969997 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 (22970503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3747 + ... + 7744.

It is an arithmetic number, because the mean of its divisors is an integer number (5746000).

Almost surely, 2^22970509 is an apocalyptic number.

It is an amenable number.

22970509 is a deficient number, since it is larger than the sum of its proper divisors (13491).

22970509 is a wasteful number, since it uses less digits than its factorization.

22970509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13490.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 22970509 is about 4792.7558877957. The cubic root of 22970509 is about 284.2650974742.

The spelling of 22970509 in words is "twenty-two million, nine hundred seventy thousand, five hundred nine".