140634539 has 4 divisors (see below), whose sum is σ = 140814024. Its totient is φ = 140455056.

The previous prime is 140634517. The next prime is 140634563. The reversal of 140634539 is 935436041.

It is a happy number.

140634539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 140634539 - 2⁸ = 140634283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140634499 and 140634508.

It is not an unprimeable number, because it can be changed into a prime (140634509) 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, 88562 + ... + 90135.

It is an arithmetic number, because the mean of its divisors is an integer number (35203506).

Almost surely, 2^140634539 is an apocalyptic number.

140634539 is a deficient number, since it is larger than the sum of its proper divisors (179485).

140634539 is an equidigital number, since it uses as much as digits as its factorization.

140634539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179484.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 140634539 is about 11858.9434183657. The cubic root of 140634539 is about 520.0327136717.

The spelling of 140634539 in words is "one hundred forty million, six hundred thirty-four thousand, five hundred thirty-nine".