40215088369 has 9 divisors (see below), whose sum is σ = 42044413593. Its totient is φ = 38462194452.

The previous prime is 40215088363. The next prime is 40215088373. The reversal of 40215088369 is 96388051204.

The square root of 40215088369 is 200537.

It is a perfect power (a square), and thus also a powerful number.

It is a de Polignac number, because none of the positive numbers 2^k-40215088369 is a prime.

It is a super-2 number, since 2×40215088369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40215088363) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4607992 + ... + 4616710.

Almost surely, 2^40215088369 is an apocalyptic number.

40215088369 is the 200537-th square number.

40215088369 is the 100269-th centered octagonal number.

It is an amenable number.

40215088369 is a deficient number, since it is larger than the sum of its proper divisors (1829325224).

40215088369 is an frugal number, since it uses more digits than its factorization.

40215088369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17484 (or 8742 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 40215088369 in words is "forty billion, two hundred fifteen million, eighty-eight thousand, three hundred sixty-nine".