90434690 has 16 divisors (see below), whose sum is σ = 163081728. Its totient is φ = 36107376.

The previous prime is 90434681. The next prime is 90434753. The reversal of 90434690 is 9643409.

It is a happy number.

It is a super-2 number, since 2×90434690² = 16356866310792200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90434690.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2402 + ... + 13661.

It is an arithmetic number, because the mean of its divisors is an integer number (10192608).

Almost surely, 2^90434690 is an apocalyptic number.

90434690 is a deficient number, since it is larger than the sum of its proper divisors (72647038).

90434690 is a wasteful number, since it uses less digits than its factorization.

90434690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16633.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 90434690 is about 9509.7155583119. The cubic root of 90434690 is about 448.8608057574.

The spelling of 90434690 in words is "ninety million, four hundred thirty-four thousand, six hundred ninety".