140639519 has 2 divisors, whose sum is σ = 140639520. Its totient is φ = 140639518.

The previous prime is 140639509. The next prime is 140639533. The reversal of 140639519 is 915936041.

It is a weak prime.

It is an emirp because it is prime and its reverse (915936041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140639519 - 2¹² = 140635423 is a prime.

It is a super-2 number, since 2×140639519² = 39558948609102722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140639509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70319759 + 70319760.

It is an arithmetic number, because the mean of its divisors is an integer number (70319760).

Almost surely, 2^140639519 is an apocalyptic number.

140639519 is a deficient number, since it is larger than the sum of its proper divisors (1).

140639519 is an equidigital number, since it uses as much as digits as its factorization.

140639519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 140639519 is about 11859.1533846224. The cubic root of 140639519 is about 520.0388518801.

The spelling of 140639519 in words is "one hundred forty million, six hundred thirty-nine thousand, five hundred nineteen".