90993451 has 8 divisors (see below), whose sum is σ = 99947520. Its totient is φ = 82455912.

The previous prime is 90993443. The next prime is 90993467. The reversal of 90993451 is 15439909.

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 90993451 - 2³ = 90993443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90993251) 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, 103675 + ... + 104548.

It is an arithmetic number, because the mean of its divisors is an integer number (12493440).

Almost surely, 2^90993451 is an apocalyptic number.

90993451 is a deficient number, since it is larger than the sum of its proper divisors (8954069).

90993451 is a wasteful number, since it uses less digits than its factorization.

90993451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208265.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 90993451 is about 9539.0487471236. The cubic root of 90993451 is about 449.7833541520.

The spelling of 90993451 in words is "ninety million, nine hundred ninety-three thousand, four hundred fifty-one".