90419999 has 8 divisors (see below), whose sum is σ = 94255920. Its totient is φ = 86632000.

The previous prime is 90419981. The next prime is 90420017. The reversal of 90419999 is 99991409.

It is an interprime number because it is at equal distance from previous prime (90419981) and next prime (90420017).

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 90419999 - 2⁸ = 90419743 is a prime.

It is a Duffinian number.

90419999 is a modest number, since divided by 9999 gives 9041 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90419909) 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, 8102 + ... + 15699.

It is an arithmetic number, because the mean of its divisors is an integer number (11781990).

Almost surely, 2^90419999 is an apocalyptic number.

90419999 is a deficient number, since it is larger than the sum of its proper divisors (3835921).

90419999 is a wasteful number, since it uses less digits than its factorization.

90419999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23961.

The product of its (nonzero) digits is 236196, while the sum is 50.

The square root of 90419999 is about 9508.9431063605. The cubic root of 90419999 is about 448.8364988195.

The spelling of 90419999 in words is "ninety million, four hundred nineteen thousand, nine hundred ninety-nine".