201044639 has 2 divisors, whose sum is σ = 201044640. Its totient is φ = 201044638.

The previous prime is 201044629. The next prime is 201044647. The reversal of 201044639 is 936440102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201044639 - 2⁸ = 201044383 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201044629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100522319 + 100522320.

It is an arithmetic number, because the mean of its divisors is an integer number (100522320).

Almost surely, 2^201044639 is an apocalyptic number.

201044639 is a deficient number, since it is larger than the sum of its proper divisors (1).

201044639 is an equidigital number, since it uses as much as digits as its factorization.

201044639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 201044639 is about 14179.0210875081. The cubic root of 201044639 is about 585.8199610382.

The spelling of 201044639 in words is "two hundred one million, forty-four thousand, six hundred thirty-nine".