9491428 has 6 divisors (see below), whose sum is σ = 16610006. Its totient is φ = 4745712.

The previous prime is 9491401. The next prime is 9491429. The reversal of 9491428 is 8241949.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6594624 + 2896804 = 2568^2 + 1702^2 .

It is not an unprimeable number, because it can be changed into a prime (9491429) 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, 1186425 + ... + 1186432.

Almost surely, 2^9491428 is an apocalyptic number.

It is an amenable number.

9491428 is a deficient number, since it is larger than the sum of its proper divisors (7118578).

9491428 is a wasteful number, since it uses less digits than its factorization.

9491428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372861 (or 2372859 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 9491428 is about 3080.8161256394. The cubic root of 9491428 is about 211.7274592020.

The spelling of 9491428 in words is "nine million, four hundred ninety-one thousand, four hundred twenty-eight".