9979457 has 4 divisors (see below), whose sum is σ = 10082436. Its totient is φ = 9876480.

The previous prime is 9979433. The next prime is 9979469. The reversal of 9979457 is 7549799.

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 6885376 + 3094081 = 2624^2 + 1759^2 .

It is a cyclic number.

It is not a de Polignac number, because 9979457 - 2¹⁶ = 9913921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9975457) 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, 51344 + ... + 51537.

It is an arithmetic number, because the mean of its divisors is an integer number (2520609).

Almost surely, 2^9979457 is an apocalyptic number.

9979457 is a gapful number since it is divisible by the number (97) formed by its first and last digit.

It is an amenable number.

9979457 is a deficient number, since it is larger than the sum of its proper divisors (102979).

9979457 is a wasteful number, since it uses less digits than its factorization.

9979457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102978.

The product of its digits is 714420, while the sum is 50.

The square root of 9979457 is about 3159.0278567939. The cubic root of 9979457 is about 215.2958393590.

The spelling of 9979457 in words is "nine million, nine hundred seventy-nine thousand, four hundred fifty-seven".