139419249 has 8 divisors (see below), whose sum is σ = 189847680. Its totient is φ = 90968496.

The previous prime is 139419233. The next prime is 139419251. The reversal of 139419249 is 942914931.

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

It is not a de Polignac number, because 139419249 - 2⁴ = 139419233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139419249.

It is not an unprimeable number, because it can be changed into a prime (139419209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494254 + ... + 494535.

It is an arithmetic number, because the mean of its divisors is an integer number (23730960).

Almost surely, 2^139419249 is an apocalyptic number.

It is an amenable number.

139419249 is a deficient number, since it is larger than the sum of its proper divisors (50428431).

139419249 is an equidigital number, since it uses as much as digits as its factorization.

139419249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988839.

The product of its digits is 69984, while the sum is 42.

The square root of 139419249 is about 11807.5928537530. The cubic root of 139419249 is about 518.5304279242.

The spelling of 139419249 in words is "one hundred thirty-nine million, four hundred nineteen thousand, two hundred forty-nine".