83247899 has 4 divisors (see below), whose sum is σ = 95140464. Its totient is φ = 71355336.

The previous prime is 83247883. The next prime is 83247943. The reversal of 83247899 is 99874238.

It is a happy number.

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 83247899 - 2⁴ = 83247883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83247809) 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, 5946272 + ... + 5946285.

It is an arithmetic number, because the mean of its divisors is an integer number (23785116).

Almost surely, 2^83247899 is an apocalyptic number.

83247899 is a deficient number, since it is larger than the sum of its proper divisors (11892565).

83247899 is a wasteful number, since it uses less digits than its factorization.

83247899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11892564.

The product of its digits is 870912, while the sum is 50.

The square root of 83247899 is about 9124.0286606301. The cubic root of 83247899 is about 436.6409137996.

The spelling of 83247899 in words is "eighty-three million, two hundred forty-seven thousand, eight hundred ninety-nine".