90144001 has 4 divisors (see below), whose sum is σ = 93051904. Its totient is φ = 87236100.

The previous prime is 90143971. The next prime is 90144017. The reversal of 90144001 is 10044109.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90144001 - 2⁷ = 90143873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90144001.

It is not an unprimeable number, because it can be changed into a prime (90144071) 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, 1453905 + ... + 1453966.

It is an arithmetic number, because the mean of its divisors is an integer number (23262976).

Almost surely, 2^90144001 is an apocalyptic number.

It is an amenable number.

90144001 is a deficient number, since it is larger than the sum of its proper divisors (2907903).

90144001 is a wasteful number, since it uses less digits than its factorization.

90144001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2907902.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 90144001 is about 9494.4194661917. The cubic root of 90144001 is about 448.3793572090.

The spelling of 90144001 in words is "ninety million, one hundred forty-four thousand, one".