9915401 has 4 divisors (see below), whose sum is σ = 10026900. Its totient is φ = 9803904.

The previous prime is 9915391. The next prime is 9915407. The reversal of 9915401 is 1045199.

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 2972176 + 6943225 = 1724^2 + 2635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9915401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9915407) 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, 55616 + ... + 55793.

It is an arithmetic number, because the mean of its divisors is an integer number (2506725).

Almost surely, 2^9915401 is an apocalyptic number.

It is an amenable number.

9915401 is a deficient number, since it is larger than the sum of its proper divisors (111499).

9915401 is a wasteful number, since it uses less digits than its factorization.

9915401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111498.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 9915401 is about 3148.8729729857. The cubic root of 9915401 is about 214.8342042520.

The spelling of 9915401 in words is "nine million, nine hundred fifteen thousand, four hundred one".