4040791787 has 4 divisors (see below), whose sum is σ = 4043000496. Its totient is φ = 4038583080.

The previous prime is 4040791757. The next prime is 4040791817. The reversal of 4040791787 is 7871970404.

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

It is an interprime number because it is at equal distance from previous prime (4040791757) and next prime (4040791817).

It is a cyclic number.

It is not a de Polignac number, because 4040791787 - 2¹² = 4040787691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4040791717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1101608 + ... + 1105269.

It is an arithmetic number, because the mean of its divisors is an integer number (1010750124).

Almost surely, 2^4040791787 is an apocalyptic number.

4040791787 is a deficient number, since it is larger than the sum of its proper divisors (2208709).

4040791787 is a wasteful number, since it uses less digits than its factorization.

4040791787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208708.

The product of its (nonzero) digits is 395136, while the sum is 47.

The square root of 4040791787 is about 63567.2225836555. Note that the first 3 decimals coincide. The cubic root of 4040791787 is about 1592.7788893533.

The spelling of 4040791787 in words is "four billion, forty million, seven hundred ninety-one thousand, seven hundred eighty-seven".