22871899 has 2 divisors, whose sum is σ = 22871900. Its totient is φ = 22871898.

The previous prime is 22871887. The next prime is 22871903. The reversal of 22871899 is 99817822.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22871899 is a prime.

It is not a weakly prime, because it can be changed into another prime (22871099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11435949 + 11435950.

It is an arithmetic number, because the mean of its divisors is an integer number (11435950).

Almost surely, 2^22871899 is an apocalyptic number.

22871899 is a deficient number, since it is larger than the sum of its proper divisors (1).

22871899 is an equidigital number, since it uses as much as digits as its factorization.

22871899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 46.

The square root of 22871899 is about 4782.4574227064. The cubic root of 22871899 is about 283.8577405290.

It can be divided in two parts, 2287 and 1899, that added together give a triangular number (4186 = T₉₁).

The spelling of 22871899 in words is "twenty-two million, eight hundred seventy-one thousand, eight hundred ninety-nine".