81414599 has 8 divisors (see below), whose sum is σ = 93949440. Its totient is φ = 69105816.

The previous prime is 81414583. The next prime is 81414623. The reversal of 81414599 is 99541418.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81414599 - 2⁴ = 81414583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81414539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55739 + ... + 57180.

It is an arithmetic number, because the mean of its divisors is an integer number (11743680).

Almost surely, 2^81414599 is an apocalyptic number.

81414599 is a deficient number, since it is larger than the sum of its proper divisors (12534841).

81414599 is a wasteful number, since it uses less digits than its factorization.

81414599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113029.

The product of its digits is 51840, while the sum is 41.

The square root of 81414599 is about 9023.0038789751. The cubic root of 81414599 is about 433.4118314729.

The spelling of 81414599 in words is "eighty-one million, four hundred fourteen thousand, five hundred ninety-nine".