78294959 has 4 divisors (see below), whose sum is σ = 80115816. Its totient is φ = 76474104.

The previous prime is 78294943. The next prime is 78294971. The reversal of 78294959 is 95949287.

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 78294959 - 2⁴ = 78294943 is a prime.

It is a super-2 number, since 2×78294959² = 12260201209623362, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78294959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78294919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 910364 + ... + 910449.

It is an arithmetic number, because the mean of its divisors is an integer number (20028954).

Almost surely, 2^78294959 is an apocalyptic number.

78294959 is a deficient number, since it is larger than the sum of its proper divisors (1820857).

78294959 is a wasteful number, since it uses less digits than its factorization.

78294959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820856.

The product of its digits is 1632960, while the sum is 53.

The square root of 78294959 is about 8848.4438744900. The cubic root of 78294959 is about 427.8037629961.

The spelling of 78294959 in words is "seventy-eight million, two hundred ninety-four thousand, nine hundred fifty-nine".