90719843 has 16 divisors (see below), whose sum is σ = 96546816. Its totient is φ = 85071360.

The previous prime is 90719833. The next prime is 90719873. The reversal of 90719843 is 34891709.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 90719843 - 2⁶ = 90719779 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 90719843.

It is not an unprimeable number, because it can be changed into a prime (90719833) 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, 469955 + ... + 470147.

It is an arithmetic number, because the mean of its divisors is an integer number (6034176).

Almost surely, 2^90719843 is an apocalyptic number.

90719843 is a deficient number, since it is larger than the sum of its proper divisors (5826973).

90719843 is a wasteful number, since it uses less digits than its factorization.

90719843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 90719843 is about 9524.6964781036. The cubic root of 90719843 is about 449.3320840282.

The spelling of 90719843 in words is "ninety million, seven hundred nineteen thousand, eight hundred forty-three".