921948 has 12 divisors (see below), whose sum is σ = 2151240. Its totient is φ = 307312.

The previous prime is 921931. The next prime is 921959. The reversal of 921948 is 849129.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×921948² = 1699976229408, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 921948.

It is an unprimeable number.

921948 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38403 + ... + 38426.

It is an arithmetic number, because the mean of its divisors is an integer number (179270).

2⁹²¹⁹⁴⁸ is an apocalyptic number.

It is an amenable number.

921948 is an abundant number, since it is smaller than the sum of its proper divisors (1229292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

921948 is a wasteful number, since it uses less digits than its factorization.

921948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76836 (or 76834 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 921948 is about 960.1812328930. The cubic root of 921948 is about 97.3274792668.

The spelling of 921948 in words is "nine hundred twenty-one thousand, nine hundred forty-eight".