9377221 has 16 divisors (see below), whose sum is σ = 11223040. Its totient is φ = 7665840.

The previous prime is 9377213. The next prime is 9377287. The reversal of 9377221 is 1227739.

9377221 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9377221 - 2³ = 9377213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

9377221 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9377821) 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, 16870 + ... + 17416.

It is an arithmetic number, because the mean of its divisors is an integer number (701440).

Almost surely, 2^9377221 is an apocalyptic number.

It is an amenable number.

9377221 is a deficient number, since it is larger than the sum of its proper divisors (1845819).

9377221 is a wasteful number, since it uses less digits than its factorization.

9377221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664.

The product of its digits is 5292, while the sum is 31.

The square root of 9377221 is about 3062.2248447820. The cubic root of 9377221 is about 210.8748162458.

The spelling of 9377221 in words is "nine million, three hundred seventy-seven thousand, two hundred twenty-one".