78276459 has 4 divisors (see below), whose sum is σ = 104368616. Its totient is φ = 52184304.

The previous prime is 78276433. The next prime is 78276463. The reversal of 78276459 is 95467287.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95467287 = 3 ⋅31822429.

It is not a de Polignac number, because 78276459 - 2⁹ = 78275947 is a prime.

It is a super-2 number, since 2×78276459² = 12254408067157362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78276059) 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, 13046074 + ... + 13046079.

It is an arithmetic number, because the mean of its divisors is an integer number (26092154).

Almost surely, 2^78276459 is an apocalyptic number.

78276459 is a deficient number, since it is larger than the sum of its proper divisors (26092157).

78276459 is a wasteful number, since it uses less digits than its factorization.

78276459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26092156.

The product of its digits is 846720, while the sum is 48.

The square root of 78276459 is about 8847.3984311774. The cubic root of 78276459 is about 427.7700656668.

The spelling of 78276459 in words is "seventy-eight million, two hundred seventy-six thousand, four hundred fifty-nine".