9400731 has 8 divisors (see below), whose sum is σ = 12573504. Its totient is φ = 6247560.

The previous prime is 9400723. The next prime is 9400733. The reversal of 9400731 is 1370049.

9400731 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 9400731 - 2³ = 9400723 is a prime.

It is a super-3 number, since 3×9400731³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (9400733) 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, 3741 + ... + 5726.

It is an arithmetic number, because the mean of its divisors is an integer number (1571688).

Almost surely, 2^9400731 is an apocalyptic number.

9400731 is a deficient number, since it is larger than the sum of its proper divisors (3172773).

9400731 is a wasteful number, since it uses less digits than its factorization.

9400731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9801.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 9400731 is about 3066.0611539889. The cubic root of 9400731 is about 211.0509000238.

The spelling of 9400731 in words is "nine million, four hundred thousand, seven hundred thirty-one".