40446887 has 4 divisors (see below), whose sum is σ = 43558200. Its totient is φ = 37335576.

The previous prime is 40446871. The next prime is 40446907. The reversal of 40446887 is 78864404.

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

It is a cyclic number.

It is not a de Polignac number, because 40446887 - 2⁴ = 40446871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40446827) 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, 1555637 + ... + 1555662.

It is an arithmetic number, because the mean of its divisors is an integer number (10889550).

Almost surely, 2^40446887 is an apocalyptic number.

40446887 is a deficient number, since it is larger than the sum of its proper divisors (3111313).

40446887 is a wasteful number, since it uses less digits than its factorization.

40446887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3111312.

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 40446887 is about 6359.7867102600. The cubic root of 40446887 is about 343.2640855933.

The spelling of 40446887 in words is "forty million, four hundred forty-six thousand, eight hundred eighty-seven".