90912434 has 8 divisors (see below), whose sum is σ = 138404208. Its totient is φ = 44777700.

The previous prime is 90912433. The next prime is 90912487. The reversal of 90912434 is 43421909.

It is a happy number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90912434.

It is not an unprimeable number, because it can be changed into a prime (90912433) 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, 339092 + ... + 339359.

It is an arithmetic number, because the mean of its divisors is an integer number (17300526).

Almost surely, 2^90912434 is an apocalyptic number.

90912434 is a deficient number, since it is larger than the sum of its proper divisors (47491774).

90912434 is a wasteful number, since it uses less digits than its factorization.

90912434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678520.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 90912434 is about 9534.8012040105. The cubic root of 90912434 is about 449.6498246950.

The spelling of 90912434 in words is "ninety million, nine hundred twelve thousand, four hundred thirty-four".