40331445 has 32 divisors (see below), whose sum is σ = 80455680. Its totient is φ = 16760640.

The previous prime is 40331441. The next prime is 40331449. The reversal of 40331445 is 54413304.

It is an interprime number because it is at equal distance from previous prime (40331441) and next prime (40331449).

It is not a de Polignac number, because 40331445 - 2² = 40331441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40331441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16305 + ... + 18614.

It is an arithmetic number, because the mean of its divisors is an integer number (2514240).

Almost surely, 2^40331445 is an apocalyptic number.

It is an amenable number.

40331445 is a deficient number, since it is larger than the sum of its proper divisors (40124235).

40331445 is a wasteful number, since it uses less digits than its factorization.

40331445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34945.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 40331445 is about 6350.7042916514. The cubic root of 40331445 is about 342.9371972043.

Adding to 40331445 its reverse (54413304), we get a palindrome (94744749).

The spelling of 40331445 in words is "forty million, three hundred thirty-one thousand, four hundred forty-five".