3994040767 has 4 divisors (see below), whose sum is σ = 4086925480. Its totient is φ = 3901156056.

The previous prime is 3994040753. The next prime is 3994040797. The reversal of 3994040767 is 7670404993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7670404993 = 73 ⋅105074041.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3994040767 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 3994040767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994040797) 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, 46442292 + ... + 46442377.

It is an arithmetic number, because the mean of its divisors is an integer number (1021731370).

Almost surely, 2^3994040767 is an apocalyptic number.

3994040767 is a deficient number, since it is larger than the sum of its proper divisors (92884713).

3994040767 is an equidigital number, since it uses as much as digits as its factorization.

3994040767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92884712.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The square root of 3994040767 is about 63198.4237699011. The cubic root of 3994040767 is about 1586.6123524403.

The spelling of 3994040767 in words is "three billion, nine hundred ninety-four million, forty thousand, seven hundred sixty-seven".