139929349 has 6 divisors (see below), whose sum is σ = 162775014. Its totient is φ = 119939400.

The previous prime is 139929343. The next prime is 139929359. The reversal of 139929349 is 943929931.

It can be written as a sum of positive squares in only one way, i.e., 121396324 + 18533025 = 11018^2 + 4305^2 .

It is not a de Polignac number, because 139929349 - 2³ = 139929341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 2855701 = 139929349 / (1 + 3 + 9 + 9 + 2 + 9 + 3 + 4 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139929341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1427802 + ... + 1427899.

It is an arithmetic number, because the mean of its divisors is an integer number (27129169).

Almost surely, 2^139929349 is an apocalyptic number.

It is an amenable number.

139929349 is a deficient number, since it is larger than the sum of its proper divisors (22845665).

139929349 is an equidigital number, since it uses as much as digits as its factorization.

139929349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855715 (or 2855708 counting only the distinct ones).

The product of its digits is 472392, while the sum is 49.

The square root of 139929349 is about 11829.1736397772. The cubic root of 139929349 is about 519.1620490829.

The spelling of 139929349 in words is "one hundred thirty-nine million, nine hundred twenty-nine thousand, three hundred forty-nine".