40787169 has 8 divisors (see below), whose sum is σ = 55709472. Its totient is φ = 26528160.

The previous prime is 40787143. The next prime is 40787171. The reversal of 40787169 is 96178704.

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

It is not a de Polignac number, because 40787169 - 2¹⁶ = 40721633 is a prime.

It is a super-2 number, since 2×40787169² = 3327186310069122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40787169.

It is not an unprimeable number, because it can be changed into a prime (40787069) 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, 165679 + ... + 165924.

It is an arithmetic number, because the mean of its divisors is an integer number (6963684).

Almost surely, 2^40787169 is an apocalyptic number.

It is an amenable number.

40787169 is a deficient number, since it is larger than the sum of its proper divisors (14922303).

40787169 is a wasteful number, since it uses less digits than its factorization.

40787169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331647.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 40787169 is about 6386.4833046051. The cubic root of 40787169 is about 344.2240321127.

The spelling of 40787169 in words is "forty million, seven hundred eighty-seven thousand, one hundred sixty-nine".