390836129 has 4 divisors (see below), whose sum is σ = 390883584. Its totient is φ = 390788676.

The previous prime is 390836111. The next prime is 390836167. The reversal of 390836129 is 921638093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 921638093 = 15569 ⋅59197.

It is a cyclic number.

It is not a de Polignac number, because 390836129 - 2⁸ = 390835873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (390836179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7817 + ... + 29030.

It is an arithmetic number, because the mean of its divisors is an integer number (97720896).

Almost surely, 2^390836129 is an apocalyptic number.

It is an amenable number.

390836129 is a deficient number, since it is larger than the sum of its proper divisors (47455).

390836129 is a wasteful number, since it uses less digits than its factorization.

390836129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47454.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 390836129 is about 19769.5758426932. The cubic root of 390836129 is about 731.1361110869.

The spelling of 390836129 in words is "three hundred ninety million, eight hundred thirty-six thousand, one hundred twenty-nine".