90140594 has 16 divisors (see below), whose sum is σ = 137771808. Its totient is φ = 44222112.

The previous prime is 90140593. The next prime is 90140597. The reversal of 90140594 is 49504109.

It is a self number, because there is not a number n which added to its sum of digits gives 90140594.

It is not an unprimeable number, because it can be changed into a prime (90140593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36734 + ... + 39110.

It is an arithmetic number, because the mean of its divisors is an integer number (8610738).

Almost surely, 2^90140594 is an apocalyptic number.

90140594 is a deficient number, since it is larger than the sum of its proper divisors (47631214).

90140594 is a wasteful number, since it uses less digits than its factorization.

90140594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 90140594 is about 9494.2400433105. The cubic root of 90140594 is about 448.3737082928.

The spelling of 90140594 in words is "ninety million, one hundred forty thousand, five hundred ninety-four".