78949077 has 8 divisors (see below), whose sum is σ = 105340320. Its totient is φ = 52595280.

The previous prime is 78949043. The next prime is 78949099. The reversal of 78949077 is 77094987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78949077 - 2¹⁰ = 78948053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78949007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4002 + ... + 13187.

It is an arithmetic number, because the mean of its divisors is an integer number (13167540).

Almost surely, 2^78949077 is an apocalyptic number.

It is an amenable number.

78949077 is a deficient number, since it is larger than the sum of its proper divisors (26391243).

78949077 is a wasteful number, since it uses less digits than its factorization.

78949077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18723.

The product of its (nonzero) digits is 889056, while the sum is 51.

The square root of 78949077 is about 8885.3293129743. The cubic root of 78949077 is about 428.9918277522.

The spelling of 78949077 in words is "seventy-eight million, nine hundred forty-nine thousand, seventy-seven".