90093394 has 8 divisors (see below), whose sum is σ = 135180540. Its totient is φ = 45033216.

The previous prime is 90093389. The next prime is 90093397. The reversal of 90093394 is 49339009.

It can be written as a sum of positive squares in 2 ways, for example, as 83265625 + 6827769 = 9125^2 + 2613^2 .

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

It is not an unprimeable number, because it can be changed into a prime (90093397) 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, 8542 + ... + 15910.

Almost surely, 2^90093394 is an apocalyptic number.

90093394 is a deficient number, since it is larger than the sum of its proper divisors (45087146).

90093394 is a wasteful number, since it uses less digits than its factorization.

90093394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13484.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 90093394 is about 9491.7540001835. The cubic root of 90093394 is about 448.2954345168.

It can be divided in two parts, 9009 and 3394, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 90093394 in words is "ninety million, ninety-three thousand, three hundred ninety-four".