879149653 has 4 divisors (see below), whose sum is σ = 879236620. Its totient is φ = 879062688.

The previous prime is 879149651. The next prime is 879149657. The reversal of 879149653 is 356941978.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 512886609 + 366263044 = 22647^2 + 19138^2 .

It is a cyclic number.

It is not a de Polignac number, because 879149653 - 2¹ = 879149651 is a prime.

It is a super-2 number, since 2×879149653² = 1545808224740040818, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 879149653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879149651) 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, 25968 + ... + 49321.

It is an arithmetic number, because the mean of its divisors is an integer number (219809155).

Almost surely, 2^879149653 is an apocalyptic number.

It is an amenable number.

879149653 is a deficient number, since it is larger than the sum of its proper divisors (86967).

879149653 is a wasteful number, since it uses less digits than its factorization.

879149653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86966.

The product of its digits is 1632960, while the sum is 52.

The square root of 879149653 is about 29650.4578885386. The cubic root of 879149653 is about 957.9752075819.

The spelling of 879149653 in words is "eight hundred seventy-nine million, one hundred forty-nine thousand, six hundred fifty-three".