994668877 has 4 divisors (see below), whose sum is σ = 996455196. Its totient is φ = 992882560.

The previous prime is 994668859. The next prime is 994668949. The reversal of 994668877 is 778866499.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 778866499 = 8233 ⋅94603.

It can be written as a sum of positive squares in 2 ways, for example, as 259499881 + 735168996 = 16109^2 + 27114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-994668877 is a prime.

It is a super-2 number, since 2×994668877² = 1978732349744882258, 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 (994668847) 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, 892324 + ... + 893437.

It is an arithmetic number, because the mean of its divisors is an integer number (249113799).

Almost surely, 2^994668877 is an apocalyptic number.

It is an amenable number.

994668877 is a deficient number, since it is larger than the sum of its proper divisors (1786319).

994668877 is a wasteful number, since it uses less digits than its factorization.

994668877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786318.

The product of its digits is 36578304, while the sum is 64.

The square root of 994668877 is about 31538.3715020291. The cubic root of 994668877 is about 998.2197917391.

The spelling of 994668877 in words is "nine hundred ninety-four million, six hundred sixty-eight thousand, eight hundred seventy-seven".