7439091 has 8 divisors (see below), whose sum is σ = 10820544. Its totient is φ = 4508520.

The previous prime is 7439087. The next prime is 7439093. The reversal of 7439091 is 1909347.

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

It is not a de Polignac number, because 7439091 - 2² = 7439087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 225427 = 7439091 / (7 + 4 + 3 + 9 + 0 + 9 + 1).

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (7439093) 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, 112681 + ... + 112746.

It is an arithmetic number, because the mean of its divisors is an integer number (1352568).

Almost surely, 2^7439091 is an apocalyptic number.

7439091 is a deficient number, since it is larger than the sum of its proper divisors (3381453).

7439091 is a wasteful number, since it uses less digits than its factorization.

7439091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225441.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 7439091 is about 2727.4697065229. The cubic root of 7439091 is about 195.2120507179.

The spelling of 7439091 in words is "seven million, four hundred thirty-nine thousand, ninety-one".