399838515301 has 2 divisors, whose sum is σ = 399838515302. Its totient is φ = 399838515300.

The previous prime is 399838515221. The next prime is 399838515341. The reversal of 399838515301 is 103515838993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343384280100 + 56454235201 = 585990^2 + 237601^2 .

It is a cyclic number.

It is not a de Polignac number, because 399838515301 - 2³⁵ = 365478776933 is a prime.

It is a super-2 number, since 2×399838515301² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399838515341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199919257650 + 199919257651.

It is an arithmetic number, because the mean of its divisors is an integer number (199919257651).

Almost surely, 2^399838515301 is an apocalyptic number.

It is an amenable number.

399838515301 is a deficient number, since it is larger than the sum of its proper divisors (1).

399838515301 is an equidigital number, since it uses as much as digits as its factorization.

399838515301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3499200, while the sum is 55.

The spelling of 399838515301 in words is "three hundred ninety-nine billion, eight hundred thirty-eight million, five hundred fifteen thousand, three hundred one".