84311491 has 12 divisors (see below), whose sum is σ = 96155640. Its totient is φ = 73309280.

The previous prime is 84311477. The next prime is 84311503. The reversal of 84311491 is 19411348.

It is not a de Polignac number, because 84311491 - 2¹³ = 84303299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84312491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1426 + ... + 13063.

It is an arithmetic number, because the mean of its divisors is an integer number (8012970).

Almost surely, 2^84311491 is an apocalyptic number.

84311491 is a deficient number, since it is larger than the sum of its proper divisors (11844149).

84311491 is a wasteful number, since it uses less digits than its factorization.

84311491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14546 (or 14523 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 84311491 is about 9182.1288925826. The cubic root of 84311491 is about 438.4925878108.

The spelling of 84311491 in words is "eighty-four million, three hundred eleven thousand, four hundred ninety-one".