90091403 has 8 divisors (see below), whose sum is σ = 91526400. Its totient is φ = 88661160.

The previous prime is 90091367. The next prime is 90091427. The reversal of 90091403 is 30419009.

It is a happy number.

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 90091403 - 2¹² = 90087307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90093403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63698 + ... + 65096.

It is an arithmetic number, because the mean of its divisors is an integer number (11440800).

Almost surely, 2^90091403 is an apocalyptic number.

90091403 is a deficient number, since it is larger than the sum of its proper divisors (1434997).

90091403 is a wasteful number, since it uses less digits than its factorization.

90091403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 90091403 is about 9491.6491190941. The cubic root of 90091403 is about 448.2921321556.

The spelling of 90091403 in words is "ninety million, ninety-one thousand, four hundred three".