84991503 has 8 divisors (see below), whose sum is σ = 119286400. Its totient is φ = 53678808.

The previous prime is 84991499. The next prime is 84991531. The reversal of 84991503 is 30519948.

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

It is not a de Polignac number, because 84991503 - 2² = 84991499 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 (84991703) 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, 745483 + ... + 745596.

It is an arithmetic number, because the mean of its divisors is an integer number (14910800).

Almost surely, 2^84991503 is an apocalyptic number.

84991503 is a deficient number, since it is larger than the sum of its proper divisors (34294897).

84991503 is a wasteful number, since it uses less digits than its factorization.

84991503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491101.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 84991503 is about 9219.0836312510. The cubic root of 84991503 is about 439.6683158014.

The spelling of 84991503 in words is "eighty-four million, nine hundred ninety-one thousand, five hundred three".