201490859 has 4 divisors (see below), whose sum is σ = 203485920. Its totient is φ = 199495800.

The previous prime is 201490853. The next prime is 201490873. The reversal of 201490859 is 958094102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201490859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201490853) 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, 997379 + ... + 997580.

It is an arithmetic number, because the mean of its divisors is an integer number (50871480).

Almost surely, 2^201490859 is an apocalyptic number.

201490859 is a deficient number, since it is larger than the sum of its proper divisors (1995061).

201490859 is a wasteful number, since it uses less digits than its factorization.

201490859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995060.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 201490859 is about 14194.7475849344. The cubic root of 201490859 is about 586.2530512978.

The spelling of 201490859 in words is "two hundred one million, four hundred ninety thousand, eight hundred fifty-nine".