78294459 has 16 divisors (see below), whose sum is σ = 110086400. Its totient is φ = 49359456.

The previous prime is 78294449. The next prime is 78294533. The reversal of 78294459 is 95449287.

It is not a de Polignac number, because 78294459 - 2⁵ = 78294427 is a prime.

It is a super-2 number, since 2×78294459² = 12260044620205362, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78294439) 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, 46077 + ... + 47745.

It is an arithmetic number, because the mean of its divisors is an integer number (6880400).

Almost surely, 2^78294459 is an apocalyptic number.

78294459 is a deficient number, since it is larger than the sum of its proper divisors (31791941).

78294459 is a wasteful number, since it uses less digits than its factorization.

78294459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514.

The product of its digits is 725760, while the sum is 48.

The square root of 78294459 is about 8848.4156208894. The cubic root of 78294459 is about 427.8028523273.

The spelling of 78294459 in words is "seventy-eight million, two hundred ninety-four thousand, four hundred fifty-nine".