78996413 has 4 divisors (see below), whose sum is σ = 79618560. Its totient is φ = 78374268.

The previous prime is 78996397. The next prime is 78996419. The reversal of 78996413 is 31469987.

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 a cyclic number.

It is not a de Polignac number, because 78996413 - 2⁴ = 78996397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78996419) 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, 310883 + ... + 311136.

It is an arithmetic number, because the mean of its divisors is an integer number (19904640).

Almost surely, 2^78996413 is an apocalyptic number.

It is an amenable number.

78996413 is a deficient number, since it is larger than the sum of its proper divisors (622147).

78996413 is a wasteful number, since it uses less digits than its factorization.

78996413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622146.

The product of its digits is 326592, while the sum is 47.

The square root of 78996413 is about 8887.9926305100. The cubic root of 78996413 is about 429.0775484083.

The spelling of 78996413 in words is "seventy-eight million, nine hundred ninety-six thousand, four hundred thirteen".