1098973 has 2 divisors, whose sum is σ = 1098974. Its totient is φ = 1098972.

The previous prime is 1098967. The next prime is 1098989. The reversal of 1098973 is 3798901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 870489 + 228484 = 933^2 + 478^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1098973 is a prime.

1098973 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1098953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549486 + 549487.

It is an arithmetic number, because the mean of its divisors is an integer number (549487).

2^1098973 is an apocalyptic number.

It is an amenable number.

1098973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098973 is an equidigital number, since it uses as much as digits as its factorization.

1098973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1098973 is about 1048.3191307994. The cubic root of 1098973 is about 103.1958757341.

The spelling of 1098973 in words is "one million, ninety-eight thousand, nine hundred seventy-three".