139544294 has 4 divisors (see below), whose sum is σ = 209316444. Its totient is φ = 69772146.

The previous prime is 139544287. The next prime is 139544329. The reversal of 139544294 is 492445931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 492445931 = 47 ⋅10477573.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34886072 + ... + 34886075.

It is an arithmetic number, because the mean of its divisors is an integer number (52329111).

Almost surely, 2^139544294 is an apocalyptic number.

139544294 is a deficient number, since it is larger than the sum of its proper divisors (69772150).

139544294 is an equidigital number, since it uses as much as digits as its factorization.

139544294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69772149.

The product of its digits is 155520, while the sum is 41.

The square root of 139544294 is about 11812.8867767367. The cubic root of 139544294 is about 518.6854047599.

The spelling of 139544294 in words is "one hundred thirty-nine million, five hundred forty-four thousand, two hundred ninety-four".