7149397 has 8 divisors (see below), whose sum is σ = 7277760. Its totient is φ = 7022400.

The previous prime is 7149379. The next prime is 7149403. The reversal of 7149397 is 7939417.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7149397 is a prime.

It is a super-2 number, since 2×7149397² = 102227754927218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7149347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16854 + ... + 17272.

It is an arithmetic number, because the mean of its divisors is an integer number (909720).

Almost surely, 2^7149397 is an apocalyptic number.

It is an amenable number.

7149397 is a deficient number, since it is larger than the sum of its proper divisors (128363).

7149397 is a wasteful number, since it uses less digits than its factorization.

7149397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683.

The product of its digits is 47628, while the sum is 40.

The square root of 7149397 is about 2673.8356344398. The cubic root of 7149397 is about 192.6444364917.

It can be divided in two parts, 7149 and 397, that multiplied together give a triangular number (2838153 = T₂₃₈₂).

The spelling of 7149397 in words is "seven million, one hundred forty-nine thousand, three hundred ninety-seven".