7149009 has 8 divisors (see below), whose sum is σ = 10893760. Its totient is φ = 4085136.

The previous prime is 7149007. The next prime is 7149013. The reversal of 7149009 is 9009417.

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

It is not a de Polignac number, because 7149009 - 2¹ = 7149007 is a prime.

It is a super-2 number, since 2×7149009² = 102216659364162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7149007) 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, 170194 + ... + 170235.

It is an arithmetic number, because the mean of its divisors is an integer number (1361720).

Almost surely, 2^7149009 is an apocalyptic number.

It is an amenable number.

7149009 is a deficient number, since it is larger than the sum of its proper divisors (3744751).

7149009 is a wasteful number, since it uses less digits than its factorization.

7149009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340439.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 7149009 is about 2673.7630785094. The cubic root of 7149009 is about 192.6409514708.

The spelling of 7149009 in words is "seven million, one hundred forty-nine thousand, nine".