9250921 has 2 divisors, whose sum is σ = 9250922. Its totient is φ = 9250920.

The previous prime is 9250909. The next prime is 9250937. The reversal of 9250921 is 1290529.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6817321 + 2433600 = 2611^2 + 1560^2 .

It is a cyclic number.

It is not a de Polignac number, because 9250921 - 2¹³ = 9242729 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 9250921.

It is not a weakly prime, because it can be changed into another prime (9250951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4625460 + 4625461.

It is an arithmetic number, because the mean of its divisors is an integer number (4625461).

Almost surely, 2^9250921 is an apocalyptic number.

It is an amenable number.

9250921 is a deficient number, since it is larger than the sum of its proper divisors (1).

9250921 is an equidigital number, since it uses as much as digits as its factorization.

9250921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 9250921 is about 3041.5326728477. The cubic root of 9250921 is about 209.9237894283.

The spelling of 9250921 in words is "nine million, two hundred fifty thousand, nine hundred twenty-one".