1792921 has 9 divisors (see below), whose sum is σ = 1960479. Its totient is φ = 1638936.

The previous prime is 1792913. The next prime is 1792927. The reversal of 1792921 is 1292971.

The square root of 1792921 is 1339.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 265225 + 1527696 = 515^2 + 1236^2 .

It is not a de Polignac number, because 1792921 - 2³ = 1792913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1792927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17356 + ... + 17458.

It is an arithmetic number, because the mean of its divisors is an integer number (217831).

2^1792921 is an apocalyptic number.

1792921 is the 1339-th square number.

1792921 is the 670-th centered octagonal number.

It is an amenable number.

1792921 is a deficient number, since it is larger than the sum of its proper divisors (167558).

1792921 is an equidigital number, since it uses as much as digits as its factorization.

1792921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 116 counting only the distinct ones).

The product of its digits is 2268, while the sum is 31.

The cubic root of 1792921 is about 121.4843640793.

The spelling of 1792921 in words is "one million, seven hundred ninety-two thousand, nine hundred twenty-one".