201989079 has 16 divisors (see below), whose sum is σ = 299484640. Its totient is φ = 134550720.

The previous prime is 201989069. The next prime is 201989113. The reversal of 201989079 is 970989102.

201989079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201989079 - 2⁴ = 201989063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201989069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44859 + ... + 49155.

It is an arithmetic number, because the mean of its divisors is an integer number (18717790).

Almost surely, 2^201989079 is an apocalyptic number.

201989079 is a deficient number, since it is larger than the sum of its proper divisors (97495561).

201989079 is a wasteful number, since it uses less digits than its factorization.

201989079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6047 (or 6041 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 201989079 is about 14212.2861989196. The cubic root of 201989079 is about 586.7358566310.

The spelling of 201989079 in words is "two hundred one million, nine hundred eighty-nine thousand, seventy-nine".