40447245 has 8 divisors (see below), whose sum is σ = 64715616. Its totient is φ = 21571856.

The previous prime is 40447201. The next prime is 40447247. The reversal of 40447245 is 54274404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40447245 - 2⁷ = 40447117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40447247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1348227 + ... + 1348256.

It is an arithmetic number, because the mean of its divisors is an integer number (8089452).

Almost surely, 2^40447245 is an apocalyptic number.

It is an amenable number.

40447245 is a deficient number, since it is larger than the sum of its proper divisors (24268371).

40447245 is a wasteful number, since it uses less digits than its factorization.

40447245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696491.

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 40447245 is about 6359.8148557957. The cubic root of 40447245 is about 343.2650983468.

The spelling of 40447245 in words is "forty million, four hundred forty-seven thousand, two hundred forty-five".