399829151 has 2 divisors, whose sum is σ = 399829152. Its totient is φ = 399829150.

The previous prime is 399829121. The next prime is 399829153. The reversal of 399829151 is 151928993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 399829151 - 2¹⁰ = 399828127 is a prime.

Together with 399829153, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 399829096 and 399829105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399829153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199914575 + 199914576.

It is an arithmetic number, because the mean of its divisors is an integer number (199914576).

Almost surely, 2^399829151 is an apocalyptic number.

399829151 is a deficient number, since it is larger than the sum of its proper divisors (1).

399829151 is an equidigital number, since it uses as much as digits as its factorization.

399829151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 47.

The square root of 399829151 is about 19995.7283188185. The cubic root of 399829151 is about 736.7013826063.

The spelling of 399829151 in words is "three hundred ninety-nine million, eight hundred twenty-nine thousand, one hundred fifty-one".