9802491 has 4 divisors (see below), whose sum is σ = 13069992. Its totient is φ = 6534992.

The previous prime is 9802477. The next prime is 9802501. The reversal of 9802491 is 1942089.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1942089 = 3 ⋅647363.

It is a cyclic number.

It is not a de Polignac number, because 9802491 - 2⁵ = 9802459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9802291) 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, 1633746 + ... + 1633751.

It is an arithmetic number, because the mean of its divisors is an integer number (3267498).

Almost surely, 2^9802491 is an apocalyptic number.

9802491 is a deficient number, since it is larger than the sum of its proper divisors (3267501).

9802491 is a wasteful number, since it uses less digits than its factorization.

9802491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267500.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 9802491 is about 3130.8930036014. The cubic root of 9802491 is about 214.0156261335.

The spelling of 9802491 in words is "nine million, eight hundred two thousand, four hundred ninety-one".