139449575 has 12 divisors (see below), whose sum is σ = 180436368. Its totient is φ = 106708800.

The previous prime is 139449539. The next prime is 139449577. The reversal of 139449575 is 575944931.

It is not a de Polignac number, because 139449575 - 2⁶ = 139449511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139449577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120686 + ... + 121835.

It is an arithmetic number, because the mean of its divisors is an integer number (15036364).

Almost surely, 2^139449575 is an apocalyptic number.

139449575 is a deficient number, since it is larger than the sum of its proper divisors (40986793).

139449575 is a wasteful number, since it uses less digits than its factorization.

139449575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242554 (or 242549 counting only the distinct ones).

The product of its digits is 680400, while the sum is 47.

The square root of 139449575 is about 11808.8769576112. The cubic root of 139449575 is about 518.5680215225.

The spelling of 139449575 in words is "one hundred thirty-nine million, four hundred forty-nine thousand, five hundred seventy-five".