90169330 has 16 divisors (see below), whose sum is σ = 163246104. Its totient is φ = 35858560.

The previous prime is 90169327. The next prime is 90169351. The reversal of 90169330 is 3396109.

It can be written as a sum of positive squares in 4 ways, for example, as 89245809 + 923521 = 9447^2 + 961^2 .

It is a junction number, because it is equal to n+sod(n) for n = 90169292 and 90169301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24331 + ... + 27790.

Almost surely, 2^90169330 is an apocalyptic number.

90169330 is a deficient number, since it is larger than the sum of its proper divisors (73076774).

90169330 is a wasteful number, since it uses less digits than its factorization.

90169330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52301.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 90169330 is about 9495.7532613269. The cubic root of 90169330 is about 448.4213490482.

The spelling of 90169330 in words is "ninety million, one hundred sixty-nine thousand, three hundred thirty".