90929291 has 8 divisors (see below), whose sum is σ = 92794464. Its totient is φ = 89069760.

The previous prime is 90929273. The next prime is 90929299. The reversal of 90929291 is 19292909.

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 90929291 - 2⁶ = 90929227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90929299) 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, 48746 + ... + 50576.

It is an arithmetic number, because the mean of its divisors is an integer number (11599308).

Almost surely, 2^90929291 is an apocalyptic number.

90929291 is a deficient number, since it is larger than the sum of its proper divisors (1865173).

90929291 is a wasteful number, since it uses less digits than its factorization.

90929291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821.

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 90929291 is about 9535.6851353220. The cubic root of 90929291 is about 449.6776143615.

The spelling of 90929291 in words is "ninety million, nine hundred twenty-nine thousand, two hundred ninety-one".