40400867 has 16 divisors (see below), whose sum is σ = 44899680. Its totient is φ = 36115200.

The previous prime is 40400861. The next prime is 40400869. The reversal of 40400867 is 76800404.

It is a cyclic number.

It is not a de Polignac number, because 40400867 - 2⁴ = 40400851 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40400861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121892 + ... + 122222.

It is an arithmetic number, because the mean of its divisors is an integer number (2806230).

Almost surely, 2^40400867 is an apocalyptic number.

40400867 is a deficient number, since it is larger than the sum of its proper divisors (4498813).

40400867 is a wasteful number, since it uses less digits than its factorization.

40400867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 40400867 is about 6356.1676346679. The cubic root of 40400867 is about 343.1338488853.

The spelling of 40400867 in words is "forty million, four hundred thousand, eight hundred sixty-seven".