3129398 has 4 divisors (see below), whose sum is σ = 4694100. Its totient is φ = 1564698.

The previous prime is 3129391. The next prime is 3129421. The reversal of 3129398 is 8939213.

3129398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8939213 = 1381 ⋅6473.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3129391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782348 + ... + 782351.

It is an arithmetic number, because the mean of its divisors is an integer number (1173525).

Almost surely, 2^3129398 is an apocalyptic number.

3129398 is a deficient number, since it is larger than the sum of its proper divisors (1564702).

3129398 is a wasteful number, since it uses less digits than its factorization.

3129398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564701.

The product of its digits is 11664, while the sum is 35.

The square root of 3129398 is about 1769.0104578549. The cubic root of 3129398 is about 146.2694405209.

The spelling of 3129398 in words is "three million, one hundred twenty-nine thousand, three hundred ninety-eight".