201493139 has 4 divisors (see below), whose sum is σ = 201771024. Its totient is φ = 201215256.

The previous prime is 201493099. The next prime is 201493151. The reversal of 201493139 is 931394102.

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-201493139 is a prime.

It is a super-3 number, since 3×201493139³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201493199) 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, 137852 + ... + 139305.

It is an arithmetic number, because the mean of its divisors is an integer number (50442756).

Almost surely, 2^201493139 is an apocalyptic number.

201493139 is a deficient number, since it is larger than the sum of its proper divisors (277885).

201493139 is an equidigital number, since it uses as much as digits as its factorization.

201493139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277884.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 201493139 is about 14194.8278961036. The cubic root of 201493139 is about 586.2552625675.

The spelling of 201493139 in words is "two hundred one million, four hundred ninety-three thousand, one hundred thirty-nine".