139282779 has 8 divisors (see below), whose sum is σ = 193784832. Its totient is φ = 88817960.

The previous prime is 139282771. The next prime is 139282789. The reversal of 139282779 is 977282931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139282779 - 2³ = 139282771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139282771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009227 + ... + 1009364.

It is an arithmetic number, because the mean of its divisors is an integer number (24223104).

Almost surely, 2^139282779 is an apocalyptic number.

139282779 is a deficient number, since it is larger than the sum of its proper divisors (54502053).

139282779 is a wasteful number, since it uses less digits than its factorization.

139282779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018617.

The product of its digits is 381024, while the sum is 48.

The square root of 139282779 is about 11801.8125302853. The cubic root of 139282779 is about 518.3611855143.

The spelling of 139282779 in words is "one hundred thirty-nine million, two hundred eighty-two thousand, seven hundred seventy-nine".