7493945 has 4 divisors (see below), whose sum is σ = 8992740. Its totient is φ = 5995152.

The previous prime is 7493921. The next prime is 7493947. The reversal of 7493945 is 5493947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5493947 = 113 ⋅48619.

It can be written as a sum of positive squares in 2 ways, for example, as 3857296 + 3636649 = 1964^2 + 1907^2 .

It is a cyclic number.

It is not a de Polignac number, because 7493945 - 2⁶ = 7493881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7493947) 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, 749390 + ... + 749399.

It is an arithmetic number, because the mean of its divisors is an integer number (2248185).

Almost surely, 2^7493945 is an apocalyptic number.

It is an amenable number.

7493945 is a deficient number, since it is larger than the sum of its proper divisors (1498795).

7493945 is a wasteful number, since it uses less digits than its factorization.

7493945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498794.

The product of its digits is 136080, while the sum is 41.

The square root of 7493945 is about 2737.5070776164. The cubic root of 7493945 is about 195.6906911572.

The spelling of 7493945 in words is "seven million, four hundred ninety-three thousand, nine hundred forty-five".