9138401 has 8 divisors (see below), whose sum is σ = 9715464. Its totient is φ = 8565760.

The previous prime is 9138347. The next prime is 9138413. The reversal of 9138401 is 1048319.

It can be written as a sum of positive squares in 4 ways, for example, as 5058001 + 4080400 = 2249^2 + 2020^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9138401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9138421) 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 in 7 ways as a sum of consecutive naturals, for example, 3821 + ... + 5733.

It is an arithmetic number, because the mean of its divisors is an integer number (1214433).

Almost surely, 2^9138401 is an apocalyptic number.

It is an amenable number.

9138401 is a deficient number, since it is larger than the sum of its proper divisors (577063).

9138401 is a wasteful number, since it uses less digits than its factorization.

9138401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 9138401 is about 3022.9788289037. The cubic root of 9138401 is about 209.0692062655.

The spelling of 9138401 in words is "nine million, one hundred thirty-eight thousand, four hundred one".