9404642 has 16 divisors (see below), whose sum is σ = 15717240. Its totient is φ = 4190592.

The previous prime is 9404641. The next prime is 9404693. The reversal of 9404642 is 2464049.

It can be written as a sum of positive squares in 4 ways, for example, as 7447441 + 1957201 = 2729^2 + 1399^2 .

It is a super-2 number, since 2×9404642² = 176894582296328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9404641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5483 + ... + 6990.

Almost surely, 2^9404642 is an apocalyptic number.

9404642 is a deficient number, since it is larger than the sum of its proper divisors (6312598).

9404642 is a wasteful number, since it uses less digits than its factorization.

9404642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12517.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 9404642 is about 3066.6988766424. The cubic root of 9404642 is about 211.0801639052.

The spelling of 9404642 in words is "nine million, four hundred four thousand, six hundred forty-two".