22223951929 has 3 divisors (see below), whose sum is σ = 22224101007. Its totient is φ = 22223802852.

The previous prime is 22223951923. The next prime is 22223951989. The reversal of 22223951929 is 92915932222.

The square root of 22223951929 is 149077.

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

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.

It can be written as a sum of positive squares in only one way, i.e., 22175677225 + 48274704 = 148915^2 + 6948^2 .

It is not a de Polignac number, because 22223951929 - 2⁹ = 22223951417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22223951923) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 74539 + ... + 223615.

It is an arithmetic number, because the mean of its divisors is an integer number (7408033669).

Almost surely, 2^22223951929 is an apocalyptic number.

22223951929 is the 149077-th square number.

22223951929 is the 74539-th centered octagonal number.

It is an amenable number.

22223951929 is a deficient number, since it is larger than the sum of its proper divisors (149078).

22223951929 is an frugal number, since it uses more digits than its factorization.

22223951929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298154 (or 149077 counting only the distinct ones).

The product of its digits is 349920, while the sum is 46.

The spelling of 22223951929 in words is "twenty-two billion, two hundred twenty-three million, nine hundred fifty-one thousand, nine hundred twenty-nine".