84290491 has 4 divisors (see below), whose sum is σ = 84690184. Its totient is φ = 83890800.

The previous prime is 84290467. The next prime is 84290537. The reversal of 84290491 is 19409248.

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 84290491 - 2¹¹ = 84288443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84290491.

It is not an unprimeable number, because it can be changed into a prime (84290431) 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, 199530 + ... + 199951.

It is an arithmetic number, because the mean of its divisors is an integer number (21172546).

Almost surely, 2^84290491 is an apocalyptic number.

84290491 is a deficient number, since it is larger than the sum of its proper divisors (399693).

84290491 is a wasteful number, since it uses less digits than its factorization.

84290491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399692.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 84290491 is about 9180.9852957076. The cubic root of 84290491 is about 438.4561787406.

The spelling of 84290491 in words is "eighty-four million, two hundred ninety thousand, four hundred ninety-one".