9772149 has 4 divisors (see below), whose sum is σ = 13029536. Its totient is φ = 6514764.

The previous prime is 9772141. The next prime is 9772157. The reversal of 9772149 is 9412779.

9772149 is digitally balanced in base 2, 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9412779 = 3 ⋅3137593.

It is an interprime number because it is at equal distance from previous prime (9772141) and next prime (9772157).

It is not a de Polignac number, because 9772149 - 2³ = 9772141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9772141) 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, 1628689 + ... + 1628694.

It is an arithmetic number, because the mean of its divisors is an integer number (3257384).

Almost surely, 2^9772149 is an apocalyptic number.

It is an amenable number.

9772149 is a deficient number, since it is larger than the sum of its proper divisors (3257387).

9772149 is a wasteful number, since it uses less digits than its factorization.

9772149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3257386.

The product of its digits is 31752, while the sum is 39.

The square root of 9772149 is about 3126.0436657219. The cubic root of 9772149 is about 213.7945811735.

The spelling of 9772149 in words is "nine million, seven hundred seventy-two thousand, one hundred forty-nine".