90140641 has 8 divisors (see below), whose sum is σ = 90931680. Its totient is φ = 89353152.

The previous prime is 90140639. The next prime is 90140669. The reversal of 90140641 is 14604109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90140641 - 2¹ = 90140639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90140441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76926 + ... + 78088.

It is an arithmetic number, because the mean of its divisors is an integer number (11366460).

Almost surely, 2^90140641 is an apocalyptic number.

It is an amenable number.

90140641 is a deficient number, since it is larger than the sum of its proper divisors (791039).

90140641 is a wasteful number, since it uses less digits than its factorization.

90140641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 90140641 is about 9494.2425184951. The cubic root of 90140641 is about 448.3737862213.

The spelling of 90140641 in words is "ninety million, one hundred forty thousand, six hundred forty-one".