800079669 has 6 divisors (see below), whose sum is σ = 1155670646. Its totient is φ = 533386440.

The previous prime is 800079661. The next prime is 800079677. The reversal of 800079669 is 966970008.

It is an interprime number because it is at equal distance from previous prime (800079661) and next prime (800079677).

It can be written as a sum of positive squares in only one way, i.e., 786129444 + 13950225 = 28038^2 + 3735^2 .

It is not a de Polignac number, because 800079669 - 2³ = 800079661 is a prime.

It is a super-2 number, since 2×800079669² = 1280254953494299122, 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 (800079661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44448862 + ... + 44448879.

Almost surely, 2^800079669 is an apocalyptic number.

It is an amenable number.

800079669 is a deficient number, since it is larger than the sum of its proper divisors (355590977).

800079669 is a wasteful number, since it uses less digits than its factorization.

800079669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88897747 (or 88897744 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 800079669 is about 28285.6795746540. The cubic root of 800079669 is about 928.3485815947.

It can be divided in two parts, 80007 and 9669, that added together give a triangular number (89676 = T₄₂₃).

The spelling of 800079669 in words is "eight hundred million, seventy-nine thousand, six hundred sixty-nine".