90140546 has 8 divisors (see below), whose sum is σ = 137063244. Its totient is φ = 44452800.

The previous prime is 90140483. The next prime is 90140569. The reversal of 90140546 is 64504109.

It can be written as a sum of positive squares in 2 ways, for example, as 87628321 + 2512225 = 9361^2 + 1585^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308555 + ... + 308846.

Almost surely, 2^90140546 is an apocalyptic number.

90140546 is a deficient number, since it is larger than the sum of its proper divisors (46922698).

90140546 is a wasteful number, since it uses less digits than its factorization.

90140546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617476.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 90140546 is about 9494.2375154617. The cubic root of 90140546 is about 448.3736287063.

The spelling of 90140546 in words is "ninety million, one hundred forty thousand, five hundred forty-six".