84790290 has 32 divisors (see below), whose sum is σ = 219151296. Its totient is φ = 20871360.

The previous prime is 84790289. The next prime is 84790291. The reversal of 84790290 is 9209748.

It is an interprime number because it is at equal distance from previous prime (84790289) and next prime (84790291).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84790291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108316 + ... + 109095.

It is an arithmetic number, because the mean of its divisors is an integer number (6848478).

Almost surely, 2^84790290 is an apocalyptic number.

84790290 is an abundant number, since it is smaller than the sum of its proper divisors (134361006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84790290 is a wasteful number, since it uses less digits than its factorization.

84790290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217434.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 84790290 is about 9208.1643121743. The cubic root of 84790290 is about 439.3210776135.

The spelling of 84790290 in words is "eighty-four million, seven hundred ninety thousand, two hundred ninety".