7149893 has 4 divisors (see below), whose sum is σ = 7202220. Its totient is φ = 7097568.

The previous prime is 7149851. The next prime is 7149899. The reversal of 7149893 is 3989417.

7149893 = 157² + 158² + ... + 293².

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3989417 = 191 ⋅20887.

It can be written as a sum of positive squares in 2 ways, for example, as 1399489 + 5750404 = 1183^2 + 2398^2 .

It is a cyclic number.

It is not a de Polignac number, because 7149893 - 2⁶ = 7149829 is a prime.

It is a super-2 number, since 2×7149893² = 102241939822898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7149893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7149899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25958 + ... + 26231.

It is an arithmetic number, because the mean of its divisors is an integer number (1800555).

Almost surely, 2^7149893 is an apocalyptic number.

It is an amenable number.

7149893 is a deficient number, since it is larger than the sum of its proper divisors (52327).

7149893 is a wasteful number, since it uses less digits than its factorization.

7149893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52326.

The product of its digits is 54432, while the sum is 41.

The square root of 7149893 is about 2673.9283834837. The cubic root of 7149893 is about 192.6488913864.

The spelling of 7149893 in words is "seven million, one hundred forty-nine thousand, eight hundred ninety-three".