9973911 has 16 divisors (see below), whose sum is σ = 13672800. Its totient is φ = 6464640.

The previous prime is 9973903. The next prime is 9973919. The reversal of 9973911 is 1193799.

It is an interprime number because it is at equal distance from previous prime (9973903) and next prime (9973919).

It is not a de Polignac number, because 9973911 - 2³ = 9973903 is a prime.

9973911 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9973911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9973919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23481 + ... + 23901.

It is an arithmetic number, because the mean of its divisors is an integer number (854550).

Almost surely, 2^9973911 is an apocalyptic number.

9973911 is a deficient number, since it is larger than the sum of its proper divisors (3698889).

9973911 is a wasteful number, since it uses less digits than its factorization.

9973911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626.

The product of its digits is 15309, while the sum is 39.

The square root of 9973911 is about 3158.1499331096. The cubic root of 9973911 is about 215.2559490128.

The spelling of 9973911 in words is "nine million, nine hundred seventy-three thousand, nine hundred eleven".