90171494 has 8 divisors (see below), whose sum is σ = 154579728. Its totient is φ = 38644920.

The previous prime is 90171493. The next prime is 90171503. The reversal of 90171494 is 49417109.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90171493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3220397 + ... + 3220424.

It is an arithmetic number, because the mean of its divisors is an integer number (19322466).

Almost surely, 2^90171494 is an apocalyptic number.

90171494 is a deficient number, since it is larger than the sum of its proper divisors (64408234).

90171494 is a wasteful number, since it uses less digits than its factorization.

90171494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6440830.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 90171494 is about 9495.8672063167. The cubic root of 90171494 is about 448.4249362844.

The spelling of 90171494 in words is "ninety million, one hundred seventy-one thousand, four hundred ninety-four".