139449501 has 12 divisors (see below), whose sum is σ = 207925120. Its totient is φ = 89967240.

The previous prime is 139449461. The next prime is 139449511. The reversal of 139449501 is 105944931.

It is a happy number.

It is not a de Polignac number, because 139449501 - 2¹¹ = 139447453 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 (139449511) 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, 249631 + ... + 250188.

Almost surely, 2^139449501 is an apocalyptic number.

It is an amenable number.

139449501 is a deficient number, since it is larger than the sum of its proper divisors (68475619).

139449501 is a wasteful number, since it uses less digits than its factorization.

139449501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499856 (or 499853 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 139449501 is about 11808.8738243746. The cubic root of 139449501 is about 518.5679297951.

The spelling of 139449501 in words is "one hundred thirty-nine million, four hundred forty-nine thousand, five hundred one".