9091139 has 4 divisors (see below), whose sum is σ = 9569640. Its totient is φ = 8612640.

The previous prime is 9091127. The next prime is 9091151. The reversal of 9091139 is 9311909.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9311909 = 277 ⋅33617.

It is an interprime number because it is at equal distance from previous prime (9091127) and next prime (9091151).

It is a cyclic number.

It is not a de Polignac number, because 9091139 - 2²⁰ = 8042563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9091109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239222 + ... + 239259.

It is an arithmetic number, because the mean of its divisors is an integer number (2392410).

Almost surely, 2^9091139 is an apocalyptic number.

9091139 is a deficient number, since it is larger than the sum of its proper divisors (478501).

9091139 is a wasteful number, since it uses less digits than its factorization.

9091139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478500.

The product of its (nonzero) digits is 2187, while the sum is 32.

The square root of 9091139 is about 3015.1515716461. The cubic root of 9091139 is about 208.7081616225.

It can be divided in two parts, 909 and 1139, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 9091139 in words is "nine million, ninety-one thousand, one hundred thirty-nine".