872398801 has 4 divisors (see below), whose sum is σ = 872476672. Its totient is φ = 872320932.

The previous prime is 872398789. The next prime is 872398811. The reversal of 872398801 is 108893278.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 872398801 - 2¹³ = 872390609 is a prime.

It is a super-2 number, since 2×872398801² = 1522159335972475202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872398811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18585 + ... + 45718.

It is an arithmetic number, because the mean of its divisors is an integer number (218119168).

Almost surely, 2^872398801 is an apocalyptic number.

It is an amenable number.

872398801 is a deficient number, since it is larger than the sum of its proper divisors (77871).

872398801 is a wasteful number, since it uses less digits than its factorization.

872398801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77870.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 872398801 is about 29536.3979015722. The cubic root of 872398801 is about 955.5168573601.

The spelling of 872398801 in words is "eight hundred seventy-two million, three hundred ninety-eight thousand, eight hundred one".