40255669 has 8 divisors (see below), whose sum is σ = 41222808. Its totient is φ = 39298560.

The previous prime is 40255637. The next prime is 40255687. The reversal of 40255669 is 96655204.

It can be written as a sum of positive squares in 4 ways, for example, as 439569 + 39816100 = 663^2 + 6310^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40255669 - 2⁵ = 40255637 is a prime.

It is a super-2 number, since 2×40255669² = 3241037773275122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40255619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5949 + ... + 10765.

It is an arithmetic number, because the mean of its divisors is an integer number (5152851).

Almost surely, 2^40255669 is an apocalyptic number.

It is an amenable number.

40255669 is a deficient number, since it is larger than the sum of its proper divisors (967139).

40255669 is a wasteful number, since it uses less digits than its factorization.

40255669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5015.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 40255669 is about 6344.7355342835. The cubic root of 40255669 is about 342.7222887893.

The spelling of 40255669 in words is "forty million, two hundred fifty-five thousand, six hundred sixty-nine".