1022572399 has 4 divisors (see below), whose sum is σ = 1026815680. Its totient is φ = 1018329120.

The previous prime is 1022572391. The next prime is 1022572403. The reversal of 1022572399 is 9932752201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1022572399 - 2³ = 1022572391 is a prime.

It is a super-2 number, since 2×1022572399² = 2091308622393230402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022572391) 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, 2121279 + ... + 2121760.

It is an arithmetic number, because the mean of its divisors is an integer number (256703920).

Almost surely, 2^1022572399 is an apocalyptic number.

1022572399 is a deficient number, since it is larger than the sum of its proper divisors (4243281).

1022572399 is an equidigital number, since it uses as much as digits as its factorization.

1022572399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4243280.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 1022572399 is about 31977.6859544277. The cubic root of 1022572399 is about 1007.4682198474.

The spelling of 1022572399 in words is "one billion, twenty-two million, five hundred seventy-two thousand, three hundred ninety-nine".