1386998 has 8 divisors (see below), whose sum is σ = 2101008. Its totient is φ = 686664.

The previous prime is 1386991. The next prime is 1387007. The reversal of 1386998 is 8996831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3161 + ... + 3572.

It is an arithmetic number, because the mean of its divisors is an integer number (262626).

2^1386998 is an apocalyptic number.

1386998 is a deficient number, since it is larger than the sum of its proper divisors (714010).

1386998 is a wasteful number, since it uses less digits than its factorization.

1386998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6838.

The product of its digits is 93312, while the sum is 44.

The square root of 1386998 is about 1177.7087925290. The cubic root of 1386998 is about 111.5215024186.

The spelling of 1386998 in words is "one million, three hundred eighty-six thousand, nine hundred ninety-eight".