90084751 has 16 divisors (see below), whose sum is σ = 98594496. Its totient is φ = 81962496.

The previous prime is 90084737. The next prime is 90084763. The reversal of 90084751 is 15748009.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 90084751 - 2¹⁹ = 89560463 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 (90084781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123550 + ... + 124276.

It is an arithmetic number, because the mean of its divisors is an integer number (6162156).

Almost surely, 2^90084751 is an apocalyptic number.

90084751 is a deficient number, since it is larger than the sum of its proper divisors (8509745).

90084751 is a wasteful number, since it uses less digits than its factorization.

90084751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 90084751 is about 9491.2986993351. The cubic root of 90084751 is about 448.2810984996.

The spelling of 90084751 in words is "ninety million, eighty-four thousand, seven hundred fifty-one".