3128977 has 4 divisors (see below), whose sum is σ = 3293680. Its totient is φ = 2964276.

The previous prime is 3128941. The next prime is 3128987. The reversal of 3128977 is 7798213.

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 3128977 - 2⁷ = 3128849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3128927) 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, 82323 + ... + 82360.

It is an arithmetic number, because the mean of its divisors is an integer number (823420).

Almost surely, 2^3128977 is an apocalyptic number.

It is an amenable number.

3128977 is a deficient number, since it is larger than the sum of its proper divisors (164703).

3128977 is a wasteful number, since it uses less digits than its factorization.

3128977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164702.

The product of its digits is 21168, while the sum is 37.

The square root of 3128977 is about 1768.8914607742. The cubic root of 3128977 is about 146.2628809849.

The spelling of 3128977 in words is "three million, one hundred twenty-eight thousand, nine hundred seventy-seven".