78914901 has 16 divisors (see below), whose sum is σ = 119980224. Its totient is φ = 45705984.

The previous prime is 78914881. The next prime is 78914903. The reversal of 78914901 is 10941987.

It is a happy number.

It is not a de Polignac number, because 78914901 - 2⁶ = 78914837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 78914901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78914903) 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, 58851 + ... + 60176.

It is an arithmetic number, because the mean of its divisors is an integer number (7498764).

Almost surely, 2^78914901 is an apocalyptic number.

It is an amenable number.

78914901 is a deficient number, since it is larger than the sum of its proper divisors (41065323).

78914901 is a wasteful number, since it uses less digits than its factorization.

78914901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119060.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 78914901 is about 8883.4059346627. The cubic root of 78914901 is about 428.9299172089.

The spelling of 78914901 in words is "seventy-eight million, nine hundred fourteen thousand, nine hundred one".