1982398 has 16 divisors (see below), whose sum is σ = 3265920. Its totient is φ = 895000.

The previous prime is 1982381. The next prime is 1982401. The reversal of 1982398 is 8932891.

It is a self number, because there is not a number n which added to its sum of digits gives 1982398.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5343 + ... + 5701.

It is an arithmetic number, because the mean of its divisors is an integer number (204120).

2^1982398 is an apocalyptic number.

1982398 is a deficient number, since it is larger than the sum of its proper divisors (1283522).

1982398 is a wasteful number, since it uses less digits than its factorization.

1982398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623.

The product of its digits is 31104, while the sum is 40.

The square root of 1982398 is about 1407.9765623049. The cubic root of 1982398 is about 125.6213964792.

The spelling of 1982398 in words is "one million, nine hundred eighty-two thousand, three hundred ninety-eight".