869252077 has 4 divisors (see below), whose sum is σ = 881495136. Its totient is φ = 857009020.

The previous prime is 869252023. The next prime is 869252093. The reversal of 869252077 is 770252968.

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.

It is a cyclic number.

It is not a de Polignac number, because 869252077 - 2¹⁹ = 868727789 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 (869252977) 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, 6121423 + ... + 6121564.

It is an arithmetic number, because the mean of its divisors is an integer number (220373784).

Almost surely, 2^869252077 is an apocalyptic number.

It is an amenable number.

869252077 is a deficient number, since it is larger than the sum of its proper divisors (12243059).

869252077 is a wasteful number, since it uses less digits than its factorization.

869252077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12243058.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 869252077 is about 29483.0811992234. The cubic root of 869252077 is about 954.3666302783.

The spelling of 869252077 in words is "eight hundred sixty-nine million, two hundred fifty-two thousand, seventy-seven".