9631389 has 4 divisors (see below), whose sum is σ = 12841856. Its totient is φ = 6420924.

The previous prime is 9631379. The next prime is 9631397. The reversal of 9631389 is 9831369.

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 an emirpimes, since its reverse is a distinct semiprime: 9831369 = 3 ⋅3277123.

It is not a de Polignac number, because 9631389 - 2⁴ = 9631373 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9631379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1605229 + ... + 1605234.

It is an arithmetic number, because the mean of its divisors is an integer number (3210464).

Almost surely, 2^9631389 is an apocalyptic number.

It is an amenable number.

9631389 is a deficient number, since it is larger than the sum of its proper divisors (3210467).

9631389 is a wasteful number, since it uses less digits than its factorization.

9631389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210466.

The product of its digits is 34992, while the sum is 39.

The square root of 9631389 is about 3103.4479212643. The cubic root of 9631389 is about 212.7630992628.

The spelling of 9631389 in words is "nine million, six hundred thirty-one thousand, three hundred eighty-nine".