78977901 has 16 divisors (see below), whose sum is σ = 106479296. Its totient is φ = 52068096.

The previous prime is 78977893. The next prime is 78977939. The reversal of 78977901 is 10977987.

It is not a de Polignac number, because 78977901 - 2³ = 78977893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78975901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182181 + ... + 182613.

It is an arithmetic number, because the mean of its divisors is an integer number (6654956).

Almost surely, 2^78977901 is an apocalyptic number.

It is an amenable number.

78977901 is a deficient number, since it is larger than the sum of its proper divisors (27501395).

78977901 is a wasteful number, since it uses less digits than its factorization.

78977901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972.

The product of its (nonzero) digits is 222264, while the sum is 48.

The square root of 78977901 is about 8886.9511644883. The cubic root of 78977901 is about 429.0440291475.

The spelling of 78977901 in words is "seventy-eight million, nine hundred seventy-seven thousand, nine hundred one".