40067869 has 4 divisors (see below), whose sum is σ = 40132000. Its totient is φ = 40003740.

The previous prime is 40067857. The next prime is 40067893. The reversal of 40067869 is 96876004.

40067869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40067869 is a prime.

It is a super-2 number, since 2×40067869² = 3210868252402322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40067899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31119 + ... + 32380.

It is an arithmetic number, because the mean of its divisors is an integer number (10033000).

Almost surely, 2^40067869 is an apocalyptic number.

It is an amenable number.

40067869 is a deficient number, since it is larger than the sum of its proper divisors (64131).

40067869 is an equidigital number, since it uses as much as digits as its factorization.

40067869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64130.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 40067869 is about 6329.9185618774. The cubic root of 40067869 is about 342.1885039718.

The spelling of 40067869 in words is "forty million, sixty-seven thousand, eight hundred sixty-nine".