9977205 has 16 divisors (see below), whose sum is σ = 18244224. Its totient is φ = 4560960.

The previous prime is 9977203. The next prime is 9977213. The reversal of 9977205 is 5027799.

9977205 = T₅₃₁ + T₅₃₂ + ... + T₅₉₃.

It is not a de Polignac number, because 9977205 - 2¹ = 9977203 is a prime.

It is a super-2 number, since 2×9977205² = 199089239224050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9977203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47406 + ... + 47615.

It is an arithmetic number, because the mean of its divisors is an integer number (1140264).

Almost surely, 2^9977205 is an apocalyptic number.

It is an amenable number.

9977205 is a deficient number, since it is larger than the sum of its proper divisors (8267019).

9977205 is a wasteful number, since it uses less digits than its factorization.

9977205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95036.

The product of its (nonzero) digits is 39690, while the sum is 39.

The square root of 9977205 is about 3158.6713979140. The cubic root of 9977205 is about 215.2796433307.

The spelling of 9977205 in words is "nine million, nine hundred seventy-seven thousand, two hundred five".