139949207 has 8 divisors (see below), whose sum is σ = 145350000. Its totient is φ = 134633664.

The previous prime is 139949197. The next prime is 139949209. The reversal of 139949207 is 702949931.

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 139949207 - 2¹⁴ = 139932823 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 (139949209) 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, 17957 + ... + 24542.

It is an arithmetic number, because the mean of its divisors is an integer number (18168750).

Almost surely, 2^139949207 is an apocalyptic number.

139949207 is a deficient number, since it is larger than the sum of its proper divisors (5400793).

139949207 is an equidigital number, since it uses as much as digits as its factorization.

139949207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42625.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 139949207 is about 11830.0129754789. The cubic root of 139949207 is about 519.1866067910.

The spelling of 139949207 in words is "one hundred thirty-nine million, nine hundred forty-nine thousand, two hundred seven".