40115789 has 8 divisors (see below), whose sum is σ = 45893760. Its totient is φ = 34349616.

The previous prime is 40115773. The next prime is 40115819. The reversal of 40115789 is 98751104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40115789 - 2⁴ = 40115773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40115389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6272 + ... + 10934.

It is an arithmetic number, because the mean of its divisors is an integer number (5736720).

Almost surely, 2^40115789 is an apocalyptic number.

It is an amenable number.

40115789 is a deficient number, since it is larger than the sum of its proper divisors (5777971).

40115789 is a wasteful number, since it uses less digits than its factorization.

40115789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5899.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 40115789 is about 6333.7026295841. The cubic root of 40115789 is about 342.3248654406.

It can be divided in two parts, 40115 and 789, that added together give a palindrome (40904).

The spelling of 40115789 in words is "forty million, one hundred fifteen thousand, seven hundred eighty-nine".