90111401 has 8 divisors (see below), whose sum is σ = 94456320. Its totient is φ = 85802112.

The previous prime is 90111383. The next prime is 90111403. The reversal of 90111401 is 10411109.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90111401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90111401.

It is not an unprimeable number, because it can be changed into a prime (90111403) 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, 3656 + ... + 13913.

It is an arithmetic number, because the mean of its divisors is an integer number (11807040).

Almost surely, 2^90111401 is an apocalyptic number.

It is an amenable number.

90111401 is a deficient number, since it is larger than the sum of its proper divisors (4344919).

90111401 is a wasteful number, since it uses less digits than its factorization.

90111401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17815.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 90111401 is about 9492.7025129833. The cubic root of 90111401 is about 448.3252995187.

The spelling of 90111401 in words is "ninety million, one hundred eleven thousand, four hundred one".