3919680400769 has 4 divisors (see below), whose sum is σ = 4479634743744. Its totient is φ = 3359726057796.

The previous prime is 3919680400687. The next prime is 3919680400789. The reversal of 3919680400769 is 9670040869193.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3919680400769 is a prime.

It is a super-2 number, since 2×3919680400769² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3919680400789) 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, 279977171477 + ... + 279977171490.

It is an arithmetic number, because the mean of its divisors is an integer number (1119908685936).

Almost surely, 2^{3919680400769} is an apocalyptic number.

It is an amenable number.

3919680400769 is a deficient number, since it is larger than the sum of its proper divisors (559954342975).

3919680400769 is an equidigital number, since it uses as much as digits as its factorization.

3919680400769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559954342974.

The product of its (nonzero) digits is 17635968, while the sum is 62.

The spelling of 3919680400769 in words is "three trillion, nine hundred nineteen billion, six hundred eighty million, four hundred thousand, seven hundred sixty-nine".