22396020409 has 9 divisors (see below), whose sum is σ = 26053732197. Its totient is φ = 19195691004.

The previous prime is 22396020379. The next prime is 22396020433. The reversal of 22396020409 is 90402069322.

The square root of 22396020409 is 149653.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 22396020409 - 2⁵ = 22396020377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22396020109) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1036882 + ... + 1058260.

It is an arithmetic number, because the mean of its divisors is an integer number (2894859133).

Almost surely, 2^22396020409 is an apocalyptic number.

22396020409 is the 149653-rd square number.

22396020409 is the 74827-th centered octagonal number.

It is an amenable number.

22396020409 is a deficient number, since it is larger than the sum of its proper divisors (3657711788).

22396020409 is an frugal number, since it uses more digits than its factorization.

22396020409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42772 (or 21386 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 22396020409 in words is "twenty-two billion, three hundred ninety-six million, twenty thousand, four hundred nine".