139044274 has 4 divisors (see below), whose sum is σ = 208566414. Its totient is φ = 69522136.

The previous prime is 139044271. The next prime is 139044293. The reversal of 139044274 is 472440931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 472440931 = 17 ⋅27790643.

It can be written as a sum of positive squares in only one way, i.e., 84180625 + 54863649 = 9175^2 + 7407^2 .

It is not an unprimeable number, because it can be changed into a prime (139044271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34761067 + ... + 34761070.

Almost surely, 2^139044274 is an apocalyptic number.

139044274 is a deficient number, since it is larger than the sum of its proper divisors (69522140).

139044274 is an equidigital number, since it uses as much as digits as its factorization.

139044274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69522139.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 139044274 is about 11791.7036088938. The cubic root of 139044274 is about 518.0651394159.

The spelling of 139044274 in words is "one hundred thirty-nine million, forty-four thousand, two hundred seventy-four".