40046445 has 12 divisors (see below), whose sum is σ = 69413916. Its totient is φ = 21358080.

The previous prime is 40046423. The next prime is 40046449. The reversal of 40046445 is 54464004.

It can be written as a sum of positive squares in 2 ways, for example, as 5788836 + 34257609 = 2406^2 + 5853^2 .

It is not a de Polignac number, because 40046445 - 2⁸ = 40046189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40046449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 444916 + ... + 445005.

It is an arithmetic number, because the mean of its divisors is an integer number (5784493).

Almost surely, 2^40046445 is an apocalyptic number.

40046445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40046445 is a deficient number, since it is larger than the sum of its proper divisors (29367471).

40046445 is a wasteful number, since it uses less digits than its factorization.

40046445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889932 (or 889929 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 40046445 is about 6328.2260547487. The cubic root of 40046445 is about 342.1275045251.

The spelling of 40046445 in words is "forty million, forty-six thousand, four hundred forty-five".