9890739 has 12 divisors (see below), whose sum is σ = 14352000. Its totient is φ = 6563664.

The previous prime is 9890737. The next prime is 9890743. The reversal of 9890739 is 9370989.

It is a happy number.

It is not a de Polignac number, because 9890739 - 2¹ = 9890737 is a prime.

It is a super-2 number, since 2×9890739² = 195653435932242, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 9890694 and 9890703.

It is not an unprimeable number, because it can be changed into a prime (9890737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339 + ... + 4460.

It is an arithmetic number, because the mean of its divisors is an integer number (1196000).

Almost surely, 2^9890739 is an apocalyptic number.

9890739 is a deficient number, since it is larger than the sum of its proper divisors (4461261).

9890739 is a wasteful number, since it uses less digits than its factorization.

9890739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5034 (or 5031 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 9890739 is about 3144.9545306729. The cubic root of 9890739 is about 214.6559415039.

The spelling of 9890739 in words is "nine million, eight hundred ninety thousand, seven hundred thirty-nine".