77976941 has 4 divisors (see below), whose sum is σ = 89116512. Its totient is φ = 66837372.

The previous prime is 77976929. The next prime is 77976947. The reversal of 77976941 is 14967977.

It is a happy number.

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 not a de Polignac number, because 77976941 - 2¹⁰ = 77975917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77976941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77976947) 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, 5569775 + ... + 5569788.

It is an arithmetic number, because the mean of its divisors is an integer number (22279128).

Almost surely, 2^77976941 is an apocalyptic number.

It is an amenable number.

77976941 is a deficient number, since it is larger than the sum of its proper divisors (11139571).

77976941 is a wasteful number, since it uses less digits than its factorization.

77976941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11139570.

The product of its digits is 666792, while the sum is 50.

The square root of 77976941 is about 8830.4553110245. The cubic root of 77976941 is about 427.2237600728.

The spelling of 77976941 in words is "seventy-seven million, nine hundred seventy-six thousand, nine hundred forty-one".