1010401999 has 2 divisors, whose sum is σ = 1010402000. Its totient is φ = 1010401998.

The previous prime is 1010401993. The next prime is 1010402011. The reversal of 1010401999 is 9991040101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1010401999 - 2²⁹ = 473531087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010401993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505200999 + 505201000.

It is an arithmetic number, because the mean of its divisors is an integer number (505201000).

Almost surely, 2^1010401999 is an apocalyptic number.

1010401999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010401999 is an equidigital number, since it uses as much as digits as its factorization.

1010401999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 34.

The square root of 1010401999 is about 31786.8211527985. The cubic root of 1010401999 is about 1003.4553795998.

The spelling of 1010401999 in words is "one billion, ten million, four hundred one thousand, nine hundred ninety-nine".