40615869 has 16 divisors (see below), whose sum is σ = 62816768. Its totient is φ = 22861872.

The previous prime is 40615867. The next prime is 40615889. The reversal of 40615869 is 96851604.

It is not a de Polignac number, because 40615869 - 2¹ = 40615867 is a prime.

It is a super-2 number, since 2×40615869² = 3299297629250322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40615867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13027 + ... + 15840.

It is an arithmetic number, because the mean of its divisors is an integer number (3926048).

Almost surely, 2^40615869 is an apocalyptic number.

It is an amenable number.

40615869 is a deficient number, since it is larger than the sum of its proper divisors (22200899).

40615869 is a wasteful number, since it uses less digits than its factorization.

40615869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28944.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 40615869 is about 6373.0580571653. The cubic root of 40615869 is about 343.7414594462.

The spelling of 40615869 in words is "forty million, six hundred fifteen thousand, eight hundred sixty-nine".