40143877 has 4 divisors (see below), whose sum is σ = 40437036. Its totient is φ = 39850720.

The previous prime is 40143847. The next prime is 40143889. The reversal of 40143877 is 77834104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32821441 + 7322436 = 5729^2 + 2706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40143877 is a prime.

It is a super-2 number, since 2×40143877² = 3223061721182258, 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 (40143847) 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, 146374 + ... + 146647.

It is an arithmetic number, because the mean of its divisors is an integer number (10109259).

Almost surely, 2^40143877 is an apocalyptic number.

It is an amenable number.

40143877 is a deficient number, since it is larger than the sum of its proper divisors (293159).

40143877 is a wasteful number, since it uses less digits than its factorization.

40143877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293158.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 40143877 is about 6335.9195859796. The cubic root of 40143877 is about 342.4047423654.

The spelling of 40143877 in words is "forty million, one hundred forty-three thousand, eight hundred seventy-seven".