40071863 has 4 divisors (see below), whose sum is σ = 43154328. Its totient is φ = 36989400.

The previous prime is 40071859. The next prime is 40071887. The reversal of 40071863 is 36817004.

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

It is a cyclic number.

It is not a de Polignac number, because 40071863 - 2² = 40071859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40071463) 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, 1541213 + ... + 1541238.

It is an arithmetic number, because the mean of its divisors is an integer number (10788582).

Almost surely, 2^40071863 is an apocalyptic number.

40071863 is a deficient number, since it is larger than the sum of its proper divisors (3082465).

40071863 is a wasteful number, since it uses less digits than its factorization.

40071863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082464.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 40071863 is about 6330.2340399072. The cubic root of 40071863 is about 342.1998734765.

Adding to 40071863 its reverse (36817004), we get a palindrome (76888867).

The spelling of 40071863 in words is "forty million, seventy-one thousand, eight hundred sixty-three".