78908477 has 8 divisors (see below), whose sum is σ = 81974592. Its totient is φ = 75896800.

The previous prime is 78908437. The next prime is 78908497. The reversal of 78908477 is 77480987.

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

It is a cyclic number.

It is not a de Polignac number, because 78908477 - 2⁶ = 78908413 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 (78908437) 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, 10643 + ... + 16464.

It is an arithmetic number, because the mean of its divisors is an integer number (10246824).

Almost surely, 2^78908477 is an apocalyptic number.

It is an amenable number.

78908477 is a deficient number, since it is larger than the sum of its proper divisors (3066115).

78908477 is a wasteful number, since it uses less digits than its factorization.

78908477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27219.

The product of its (nonzero) digits is 790272, while the sum is 50.

The square root of 78908477 is about 8883.0443542740. The cubic root of 78908477 is about 428.9182780021.

The spelling of 78908477 in words is "seventy-eight million, nine hundred eight thousand, four hundred seventy-seven".