40328945 has 4 divisors (see below), whose sum is σ = 48394740. Its totient is φ = 32263152.

The previous prime is 40328941. The next prime is 40328993. The reversal of 40328945 is 54982304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7656289 + 32672656 = 2767^2 + 5716^2 .

It is a cyclic number.

It is not a de Polignac number, because 40328945 - 2² = 40328941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40328941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4032890 + ... + 4032899.

It is an arithmetic number, because the mean of its divisors is an integer number (12098685).

Almost surely, 2^40328945 is an apocalyptic number.

It is an amenable number.

40328945 is a deficient number, since it is larger than the sum of its proper divisors (8065795).

40328945 is an equidigital number, since it uses as much as digits as its factorization.

40328945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8065794.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 40328945 is about 6350.5074600381. The cubic root of 40328945 is about 342.9301112469.

The spelling of 40328945 in words is "forty million, three hundred twenty-eight thousand, nine hundred forty-five".