139055449 has 8 divisors (see below), whose sum is σ = 150538752. Its totient is φ = 127684560.

The previous prime is 139055443. The next prime is 139055467. The reversal of 139055449 is 944550931.

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

It is a cyclic number.

It is not a de Polignac number, because 139055449 - 2¹⁷ = 138924377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139055443) 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, 25519 + ... + 30484.

It is an arithmetic number, because the mean of its divisors is an integer number (18817344).

Almost surely, 2^139055449 is an apocalyptic number.

It is an amenable number.

139055449 is a deficient number, since it is larger than the sum of its proper divisors (11483303).

139055449 is a wasteful number, since it uses less digits than its factorization.

139055449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56207.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 139055449 is about 11792.1774494790. The cubic root of 139055449 is about 518.0790180237.

The spelling of 139055449 in words is "one hundred thirty-nine million, fifty-five thousand, four hundred forty-nine".