10421000399 has 2 divisors, whose sum is σ = 10421000400. Its totient is φ = 10421000398.

The previous prime is 10421000353. The next prime is 10421000407. The reversal of 10421000399 is 99300012401.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10421000399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10421000329) 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 as a sum of consecutive naturals, namely, 5210500199 + 5210500200.

It is an arithmetic number, because the mean of its divisors is an integer number (5210500200).

Almost surely, 2^10421000399 is an apocalyptic number.

10421000399 is a deficient number, since it is larger than the sum of its proper divisors (1).

10421000399 is an equidigital number, since it uses as much as digits as its factorization.

10421000399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 10421000399 in words is "ten billion, four hundred twenty-one million, three hundred ninety-nine", and thus it is an aban number.