78484269 has 16 divisors (see below), whose sum is σ = 111802880. Its totient is φ = 48826800.

The previous prime is 78484261. The next prime is 78484277. The reversal of 78484269 is 96248487.

It is an interprime number because it is at equal distance from previous prime (78484261) and next prime (78484277).

It is not a de Polignac number, because 78484269 - 2³ = 78484261 is a prime.

It is a super-2 number, since 2×78484269² = 12319560960928722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78484261) 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, 6457 + ... + 14094.

It is an arithmetic number, because the mean of its divisors is an integer number (6987680).

Almost surely, 2^78484269 is an apocalyptic number.

It is an amenable number.

78484269 is a deficient number, since it is larger than the sum of its proper divisors (33318611).

78484269 is a wasteful number, since it uses less digits than its factorization.

78484269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20640.

The product of its digits is 774144, while the sum is 48.

The square root of 78484269 is about 8859.1347771664. The cubic root of 78484269 is about 428.1482821729.

The spelling of 78484269 in words is "seventy-eight million, four hundred eighty-four thousand, two hundred sixty-nine".