872309087 has 4 divisors (see below), whose sum is σ = 939409800. Its totient is φ = 805208376.

The previous prime is 872309059. The next prime is 872309099. The reversal of 872309087 is 780903278.

It is a happy number.

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 872309087 - 2⁸ = 872308831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872309387) 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, 33550337 + ... + 33550362.

It is an arithmetic number, because the mean of its divisors is an integer number (234852450).

Almost surely, 2^872309087 is an apocalyptic number.

872309087 is a deficient number, since it is larger than the sum of its proper divisors (67100713).

872309087 is a wasteful number, since it uses less digits than its factorization.

872309087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67100712.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 872309087 is about 29534.8791600711. The cubic root of 872309087 is about 955.4841023945.

The spelling of 872309087 in words is "eight hundred seventy-two million, three hundred nine thousand, eighty-seven".