7400045 has 8 divisors (see below), whose sum is σ = 8895096. Its totient is φ = 5910016.

The previous prime is 7400023. The next prime is 7400051. The reversal of 7400045 is 5400047.

It can be written as a sum of positive squares in 4 ways, for example, as 17956 + 7382089 = 134^2 + 2717^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7400045 - 2⁸ = 7399789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 3989 + ... + 5541.

It is an arithmetic number, because the mean of its divisors is an integer number (1111887).

Almost surely, 2^7400045 is an apocalyptic number.

It is an amenable number.

7400045 is a deficient number, since it is larger than the sum of its proper divisors (1495051).

7400045 is a wasteful number, since it uses less digits than its factorization.

7400045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 7400045 is about 2720.3023728990. The cubic root of 7400045 is about 194.8699110424.

The spelling of 7400045 in words is "seven million, four hundred thousand, forty-five".