3921230476829 has 2 divisors, whose sum is σ = 3921230476830. Its totient is φ = 3921230476828.

The previous prime is 3921230476789. The next prime is 3921230476843. The reversal of 3921230476829 is 9286740321293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3341485288729 + 579745188100 = 1827973^2 + 761410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3921230476829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3921230476529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1960615238414 + 1960615238415.

It is an arithmetic number, because the mean of its divisors is an integer number (1960615238415).

Almost surely, 2^{3921230476829} is an apocalyptic number.

It is an amenable number.

3921230476829 is a deficient number, since it is larger than the sum of its proper divisors (1).

3921230476829 is an equidigital number, since it uses as much as digits as its factorization.

3921230476829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 3921230476829 in words is "three trillion, nine hundred twenty-one billion, two hundred thirty million, four hundred seventy-six thousand, eight hundred twenty-nine".