499791401 has 2 divisors, whose sum is σ = 499791402. Its totient is φ = 499791400.

The previous prime is 499791379. The next prime is 499791407. The reversal of 499791401 is 104197994.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 499477801 + 313600 = 22349^2 + 560^2 .

It is a cyclic number.

It is not a de Polignac number, because 499791401 - 2²² = 495597097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (499791407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249895700 + 249895701.

It is an arithmetic number, because the mean of its divisors is an integer number (249895701).

Almost surely, 2^499791401 is an apocalyptic number.

It is an amenable number.

499791401 is a deficient number, since it is larger than the sum of its proper divisors (1).

499791401 is an equidigital number, since it uses as much as digits as its factorization.

499791401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 499791401 is about 22356.0148729598. The cubic root of 499791401 is about 793.5901338735.

The spelling of 499791401 in words is "four hundred ninety-nine million, seven hundred ninety-one thousand, four hundred one".