139280379 has 32 divisors (see below), whose sum is σ = 215778816. Its totient is φ = 78274560.

The previous prime is 139280377. The next prime is 139280413. The reversal of 139280379 is 973082931.

It is not a de Polignac number, because 139280379 - 2¹ = 139280377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139280379.

It is not an unprimeable number, because it can be changed into a prime (139280377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 541819 + ... + 542075.

It is an arithmetic number, because the mean of its divisors is an integer number (6743088).

Almost surely, 2^139280379 is an apocalyptic number.

139280379 is a deficient number, since it is larger than the sum of its proper divisors (76498437).

139280379 is a wasteful number, since it uses less digits than its factorization.

139280379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 139280379 is about 11801.7108505504. The cubic root of 139280379 is about 518.3582081805.

The spelling of 139280379 in words is "one hundred thirty-nine million, two hundred eighty thousand, three hundred seventy-nine".