9400749 has 4 divisors (see below), whose sum is σ = 12534336. Its totient is φ = 6267164.

The previous prime is 9400747. The next prime is 9400759. The reversal of 9400749 is 9470049.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9470049 = 3 ⋅3156683.

It is a cyclic number.

It is not a de Polignac number, because 9400749 - 2¹ = 9400747 is a prime.

It is a super-2 number, since 2×9400749² = 176748163522002, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9400747) 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, 1566789 + ... + 1566794.

It is an arithmetic number, because the mean of its divisors is an integer number (3133584).

Almost surely, 2^9400749 is an apocalyptic number.

It is an amenable number.

9400749 is a deficient number, since it is larger than the sum of its proper divisors (3133587).

9400749 is a wasteful number, since it uses less digits than its factorization.

9400749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3133586.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 9400749 is about 3066.0640893497. The cubic root of 9400749 is about 211.0510347266.

The spelling of 9400749 in words is "nine million, four hundred thousand, seven hundred forty-nine".