7438445 has 24 divisors (see below), whose sum is σ = 10524024. Its totient is φ = 5031936.

The previous prime is 7438439. The next prime is 7438447. The reversal of 7438445 is 5448347.

It can be written as a sum of positive squares in 4 ways, for example, as 23716 + 7414729 = 154^2 + 2723^2 .

It is not a de Polignac number, because 7438445 - 2⁶ = 7438381 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7438447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23609 + ... + 23921.

It is an arithmetic number, because the mean of its divisors is an integer number (438501).

Almost surely, 2^7438445 is an apocalyptic number.

It is an amenable number.

7438445 is a deficient number, since it is larger than the sum of its proper divisors (3085579).

7438445 is a wasteful number, since it uses less digits than its factorization.

7438445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 422 counting only the distinct ones).

The product of its digits is 53760, while the sum is 35.

The square root of 7438445 is about 2727.3512791718. The cubic root of 7438445 is about 195.2063999094.

The spelling of 7438445 in words is "seven million, four hundred thirty-eight thousand, four hundred forty-five".