901249 has 2 divisors, whose sum is σ = 901250. Its totient is φ = 901248.

The previous prime is 901247. The next prime is 901253. The reversal of 901249 is 942109.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 651249 + 250000 = 807^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 901249 - 2¹ = 901247 is a prime.

Together with 901247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (901247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450624 + 450625.

It is an arithmetic number, because the mean of its divisors is an integer number (450625).

2⁹⁰¹²⁴⁹ is an apocalyptic number.

It is an amenable number.

901249 is a deficient number, since it is larger than the sum of its proper divisors (1).

901249 is an equidigital number, since it uses as much as digits as its factorization.

901249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 901249 is about 949.3413506216. The cubic root of 901249 is about 96.5935806395.

Subtracting from 901249 its product of nonzero digits (648), we obtain a square (900601 = 949²).

The spelling of 901249 in words is "nine hundred one thousand, two hundred forty-nine".