78974119 has 4 divisors (see below), whose sum is σ = 90256144. Its totient is φ = 67692096.

The previous prime is 78974113. The next prime is 78974123. The reversal of 78974119 is 91147987.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78974119 - 2⁵ = 78974087 is a prime.

It is a super-2 number, since 2×78974119² = 12473822943652322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78974113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5641002 + ... + 5641015.

It is an arithmetic number, because the mean of its divisors is an integer number (22564036).

Almost surely, 2^78974119 is an apocalyptic number.

78974119 is a deficient number, since it is larger than the sum of its proper divisors (11282025).

78974119 is a wasteful number, since it uses less digits than its factorization.

78974119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11282024.

The product of its digits is 127008, while the sum is 46.

The square root of 78974119 is about 8886.7383780552. The cubic root of 78974119 is about 429.0371805210.

The spelling of 78974119 in words is "seventy-eight million, nine hundred seventy-four thousand, one hundred nineteen".