40616869 has 4 divisors (see below), whose sum is σ = 40823244. Its totient is φ = 40410496.

The previous prime is 40616857. The next prime is 40616881. The reversal of 40616869 is 96861604.

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

It is an interprime number because it is at equal distance from previous prime (40616857) and next prime (40616881).

It can be written as a sum of positive squares in 2 ways, for example, as 36360900 + 4255969 = 6030^2 + 2063^2 .

It is a cyclic number.

It is not a de Polignac number, because 40616869 - 2⁵ = 40616837 is a prime.

It is a super-2 number, since 2×40616869² = 3299460094726322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40616819) 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, 102892 + ... + 103285.

It is an arithmetic number, because the mean of its divisors is an integer number (10205811).

Almost surely, 2^40616869 is an apocalyptic number.

It is an amenable number.

40616869 is a deficient number, since it is larger than the sum of its proper divisors (206375).

40616869 is a wasteful number, since it uses less digits than its factorization.

40616869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206374.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 40616869 is about 6373.1365119539. The cubic root of 40616869 is about 343.7442804999.

The spelling of 40616869 in words is "forty million, six hundred sixteen thousand, eight hundred sixty-nine".