40072863 has 8 divisors (see below), whose sum is σ = 55154176. Its totient is φ = 25853400.

The previous prime is 40072853. The next prime is 40072883. The reversal of 40072863 is 36827004.

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

It is not a de Polignac number, because 40072863 - 2⁴ = 40072847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40072863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40072853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215353 + ... + 215538.

It is an arithmetic number, because the mean of its divisors is an integer number (6894272).

Almost surely, 2^40072863 is an apocalyptic number.

40072863 is a deficient number, since it is larger than the sum of its proper divisors (15081313).

40072863 is a wasteful number, since it uses less digits than its factorization.

40072863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430925.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 40072863 is about 6330.3130254356. The cubic root of 40072863 is about 342.2027200044.

Adding to 40072863 its reverse (36827004), we get a palindrome (76899867).

The spelling of 40072863 in words is "forty million, seventy-two thousand, eight hundred sixty-three".