939800977 has 4 divisors (see below), whose sum is σ = 943545456. Its totient is φ = 936056500.

The previous prime is 939800969. The next prime is 939800993. The reversal of 939800977 is 779008939.

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, and also an emirpimes, since its reverse is a distinct semiprime: 779008939 = 109 ⋅7146871.

It is a cyclic number.

It is not a de Polignac number, because 939800977 - 2³ = 939800969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (939800947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1871863 + ... + 1872364.

It is an arithmetic number, because the mean of its divisors is an integer number (235886364).

Almost surely, 2^939800977 is an apocalyptic number.

It is an amenable number.

939800977 is a deficient number, since it is larger than the sum of its proper divisors (3744479).

939800977 is a wasteful number, since it uses less digits than its factorization.

939800977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3744478.

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 939800977 is about 30656.1735544409. The cubic root of 939800977 is about 979.5169690251.

The spelling of 939800977 in words is "nine hundred thirty-nine million, eight hundred thousand, nine hundred seventy-seven".