140838739 has 2 divisors, whose sum is σ = 140838740. Its totient is φ = 140838738.

The previous prime is 140838721. The next prime is 140838767. The reversal of 140838739 is 937838041.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140838739 - 2⁵ = 140838707 is a prime.

It is a super-2 number, since 2×140838739² = 39671100806220242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140838695 and 140838704.

It is not a weakly prime, because it can be changed into another prime (140838769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70419369 + 70419370.

It is an arithmetic number, because the mean of its divisors is an integer number (70419370).

Almost surely, 2^140838739 is an apocalyptic number.

140838739 is a deficient number, since it is larger than the sum of its proper divisors (1).

140838739 is an equidigital number, since it uses as much as digits as its factorization.

140838739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 140838739 is about 11867.5498313679. The cubic root of 140838739 is about 520.2842861193.

It can be divided in two parts, 14083 and 8739, that added together give a palindrome (22822).

The spelling of 140838739 in words is "one hundred forty million, eight hundred thirty-eight thousand, seven hundred thirty-nine".