40887390672169 has 4 divisors (see below), whose sum is σ = 42206338758400. Its totient is φ = 39568442585940.

The previous prime is 40887390672113. The next prime is 40887390672187. The reversal of 40887390672169 is 96127609378804.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40887390672169 - 2⁹ = 40887390671657 is a prime.

It is a super-2 number, since 2×40887390672169² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40887390672098 and 40887390672107.

It is not an unprimeable number, because it can be changed into a prime (40887390672199) 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, 659474043069 + ... + 659474043130.

It is an arithmetic number, because the mean of its divisors is an integer number (10551584689600).

Almost surely, 2^{40887390672169} is an apocalyptic number.

It is an amenable number.

40887390672169 is a deficient number, since it is larger than the sum of its proper divisors (1318948086231).

40887390672169 is a wasteful number, since it uses less digits than its factorization.

40887390672169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318948086230.

The product of its (nonzero) digits is 219469824, while the sum is 70.

The spelling of 40887390672169 in words is "forty trillion, eight hundred eighty-seven billion, three hundred ninety million, six hundred seventy-two thousand, one hundred sixty-nine".