9971377 has 4 divisors (see below), whose sum is σ = 10738420. Its totient is φ = 9204336.

The previous prime is 9971363. The next prime is 9971387. The reversal of 9971377 is 7731799.

It is a happy number.

9971377 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6145441 + 3825936 = 2479^2 + 1956^2 .

It is a cyclic number.

It is not a de Polignac number, because 9971377 - 2¹¹ = 9969329 is a prime.

It is a super-2 number, since 2×9971377² = 198856718552258, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9971387) 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, 383502 + ... + 383527.

It is an arithmetic number, because the mean of its divisors is an integer number (2684605).

Almost surely, 2^9971377 is an apocalyptic number.

It is an amenable number.

9971377 is a deficient number, since it is larger than the sum of its proper divisors (767043).

9971377 is a wasteful number, since it uses less digits than its factorization.

9971377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767042.

The product of its digits is 83349, while the sum is 43.

The square root of 9971377 is about 3157.7487233787. The cubic root of 9971377 is about 215.2377179573.

The spelling of 9971377 in words is "nine million, nine hundred seventy-one thousand, three hundred seventy-seven".