83889715 has 24 divisors (see below), whose sum is σ = 126115920. Its totient is φ = 53097408.

The previous prime is 83889703. The next prime is 83889733. The reversal of 83889715 is 51798838.

It is not a de Polignac number, because 83889715 - 2⁷ = 83889587 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9985 + ... + 16354.

It is an arithmetic number, because the mean of its divisors is an integer number (5254830).

Almost surely, 2^83889715 is an apocalyptic number.

83889715 is a deficient number, since it is larger than the sum of its proper divisors (42226205).

83889715 is a wasteful number, since it uses less digits than its factorization.

83889715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26371 (or 26364 counting only the distinct ones).

The product of its digits is 483840, while the sum is 49.

The square root of 83889715 is about 9159.1328738042. The cubic root of 83889715 is about 437.7601652586.

The spelling of 83889715 in words is "eighty-three million, eight hundred eighty-nine thousand, seven hundred fifteen".