140277639 has 4 divisors (see below), whose sum is σ = 187036856. Its totient is φ = 93518424.

The previous prime is 140277629. The next prime is 140277647. The reversal of 140277639 is 936772041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936772041 = 3 ⋅312257347.

It is not a de Polignac number, because 140277639 - 2⁴ = 140277623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140277597 and 140277606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140277629) 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, 23379604 + ... + 23379609.

It is an arithmetic number, because the mean of its divisors is an integer number (46759214).

Almost surely, 2^140277639 is an apocalyptic number.

140277639 is a deficient number, since it is larger than the sum of its proper divisors (46759217).

140277639 is an equidigital number, since it uses as much as digits as its factorization.

140277639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46759216.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 140277639 is about 11843.8861443362. The cubic root of 140277639 is about 519.5924308827.

The spelling of 140277639 in words is "one hundred forty million, two hundred seventy-seven thousand, six hundred thirty-nine".