9156401 has 4 divisors (see below), whose sum is σ = 9174900. Its totient is φ = 9137904.

The previous prime is 9156383. The next prime is 9156403. The reversal of 9156401 is 1046519.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7263025 + 1893376 = 2695^2 + 1376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9156401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9156403) 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 3 ways as a sum of consecutive naturals, for example, 8486 + ... + 9503.

It is an arithmetic number, because the mean of its divisors is an integer number (2293725).

Almost surely, 2^9156401 is an apocalyptic number.

It is an amenable number.

9156401 is a deficient number, since it is larger than the sum of its proper divisors (18499).

9156401 is a wasteful number, since it uses less digits than its factorization.

9156401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18498.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 9156401 is about 3025.9545601347. The cubic root of 9156401 is about 209.2063848076.

The spelling of 9156401 in words is "nine million, one hundred fifty-six thousand, four hundred one".