40436427 has 16 divisors (see below), whose sum is σ = 56936960. Its totient is φ = 25456032.

The previous prime is 40436423. The next prime is 40436437. The reversal of 40436427 is 72463404.

It is not a de Polignac number, because 40436427 - 2² = 40436423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40436394 and 40436403.

It is not an unprimeable number, because it can be changed into a prime (40436423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19953 + ... + 21885.

It is an arithmetic number, because the mean of its divisors is an integer number (3558560).

Almost surely, 2^40436427 is an apocalyptic number.

40436427 is a deficient number, since it is larger than the sum of its proper divisors (16500533).

40436427 is a wasteful number, since it uses less digits than its factorization.

40436427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322.

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 40436427 is about 6358.9643024631. The cubic root of 40436427 is about 343.2344924473.

The spelling of 40436427 in words is "forty million, four hundred thirty-six thousand, four hundred twenty-seven".