83998507 has 8 divisors (see below), whose sum is σ = 87830784. Its totient is φ = 80181288.

The previous prime is 83998493. The next prime is 83998517. The reversal of 83998507 is 70589938.

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 83998507 - 2¹¹ = 83996459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83998517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8538 + ... + 15520.

It is an arithmetic number, because the mean of its divisors is an integer number (10978848).

Almost surely, 2^83998507 is an apocalyptic number.

83998507 is a deficient number, since it is larger than the sum of its proper divisors (3832277).

83998507 is a wasteful number, since it uses less digits than its factorization.

83998507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7529.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 83998507 is about 9165.0699397222. The cubic root of 83998507 is about 437.9493192821.

The spelling of 83998507 in words is "eighty-three million, nine hundred ninety-eight thousand, five hundred seven".