90344145 has 32 divisors (see below), whose sum is σ = 152755200. Its totient is φ = 45468864.

The previous prime is 90344131. The next prime is 90344147. The reversal of 90344145 is 54144309.

It is not a de Polignac number, because 90344145 - 2⁴ = 90344129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90344147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101874 + ... + 102756.

It is an arithmetic number, because the mean of its divisors is an integer number (4773600).

Almost surely, 2^90344145 is an apocalyptic number.

90344145 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

90344145 is a deficient number, since it is larger than the sum of its proper divisors (62411055).

90344145 is a wasteful number, since it uses less digits than its factorization.

90344145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 90344145 is about 9504.9537084617. The cubic root of 90344145 is about 448.7109529628.

The spelling of 90344145 in words is "ninety million, three hundred forty-four thousand, one hundred forty-five".