3914778399 has 16 divisors (see below), whose sum is σ = 5970382080. Its totient is φ = 2235139200.

The previous prime is 3914778389. The next prime is 3914778401. The reversal of 3914778399 is 9938774193.

It is a happy number.

It is not a de Polignac number, because 3914778399 - 2¹⁹ = 3914254111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3914778349) 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 15 ways as a sum of consecutive naturals, for example, 52389 + ... + 102830.

It is an arithmetic number, because the mean of its divisors is an integer number (373148880).

Almost surely, 2^3914778399 is an apocalyptic number.

3914778399 is a deficient number, since it is larger than the sum of its proper divisors (2055603681).

3914778399 is a wasteful number, since it uses less digits than its factorization.

3914778399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156430.

The product of its digits is 10287648, while the sum is 60.

The square root of 3914778399 is about 62568.1899929988. The cubic root of 3914778399 is about 1576.0466242691.

The spelling of 3914778399 in words is "three billion, nine hundred fourteen million, seven hundred seventy-eight thousand, three hundred ninety-nine".