7449945 has 16 divisors (see below), whose sum is σ = 12146112. Its totient is φ = 3897920.

The previous prime is 7449941. The next prime is 7449971. The reversal of 7449945 is 5499447.

It is not a de Polignac number, because 7449945 - 2² = 7449941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7449897 and 7449906.

It is not an unprimeable number, because it can be changed into a prime (7449941) 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 15 ways as a sum of consecutive naturals, for example, 3891 + ... + 5480.

It is an arithmetic number, because the mean of its divisors is an integer number (759132).

Almost surely, 2^7449945 is an apocalyptic number.

It is an amenable number.

7449945 is a deficient number, since it is larger than the sum of its proper divisors (4696167).

7449945 is a wasteful number, since it uses less digits than its factorization.

7449945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9432.

The product of its digits is 181440, while the sum is 42.

The square root of 7449945 is about 2729.4587375522. The cubic root of 7449945 is about 195.3069459114.

The spelling of 7449945 in words is "seven million, four hundred forty-nine thousand, nine hundred forty-five".