968421977 has 4 divisors (see below), whose sum is σ = 968484816. Its totient is φ = 968359140.

The previous prime is 968421943. The next prime is 968421991. The reversal of 968421977 is 779124869.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 779124869 = 43 ⋅18119183.

It is a cyclic number.

It is not a de Polignac number, because 968421977 - 2⁶ = 968421913 is a prime.

It is a super-2 number, since 2×968421977² = 1875682251073177058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (968421917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9218 + ... + 44964.

It is an arithmetic number, because the mean of its divisors is an integer number (242121204).

Almost surely, 2^968421977 is an apocalyptic number.

It is an amenable number.

968421977 is a deficient number, since it is larger than the sum of its proper divisors (62839).

968421977 is a wasteful number, since it uses less digits than its factorization.

968421977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62838.

The product of its digits is 1524096, while the sum is 53.

The square root of 968421977 is about 31119.4790605498. The cubic root of 968421977 is about 989.3612098574.

The spelling of 968421977 in words is "nine hundred sixty-eight million, four hundred twenty-one thousand, nine hundred seventy-seven".