9139949 has 16 divisors (see below), whose sum is σ = 11493888. Its totient is φ = 7074432.

The previous prime is 9139943. The next prime is 9139973. The reversal of 9139949 is 9499319.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9139949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9139943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3209 + ... + 5345.

It is an arithmetic number, because the mean of its divisors is an integer number (718368).

Almost surely, 2^9139949 is an apocalyptic number.

It is an amenable number.

9139949 is a deficient number, since it is larger than the sum of its proper divisors (2353939).

9139949 is a wasteful number, since it uses less digits than its factorization.

9139949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204.

The product of its digits is 78732, while the sum is 44.

The square root of 9139949 is about 3023.2348569041. The cubic root of 9139949 is about 209.0810106960.

The spelling of 9139949 in words is "nine million, one hundred thirty-nine thousand, nine hundred forty-nine".