3138897 has 8 divisors (see below), whose sum is σ = 4431456. Its totient is φ = 1969472.

The previous prime is 3138893. The next prime is 3138899. The reversal of 3138897 is 7988313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3138897 - 2² = 3138893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3138893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30723 + ... + 30824.

It is an arithmetic number, because the mean of its divisors is an integer number (553932).

Almost surely, 2^3138897 is an apocalyptic number.

It is an amenable number.

3138897 is a deficient number, since it is larger than the sum of its proper divisors (1292559).

3138897 is a wasteful number, since it uses less digits than its factorization.

3138897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61567.

The product of its digits is 36288, while the sum is 39.

The square root of 3138897 is about 1771.6932578751. The cubic root of 3138897 is about 146.4172868446.

The spelling of 3138897 in words is "three million, one hundred thirty-eight thousand, eight hundred ninety-seven".