1403998 has 8 divisors (see below), whose sum is σ = 2120400. Its totient is φ = 697200.

The previous prime is 1403981. The next prime is 1404059. The reversal of 1403998 is 8993041.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2023 + ... + 2626.

It is an arithmetic number, because the mean of its divisors is an integer number (265050).

2^1403998 is an apocalyptic number.

1403998 is a deficient number, since it is larger than the sum of its proper divisors (716402).

1403998 is a wasteful number, since it uses less digits than its factorization.

1403998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4802.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1403998 is about 1184.9042155381. The cubic root of 1403998 is about 111.9752815348.

It can be divided in two parts, 1403 and 998, that added together give a 4-th power (2401 = 7⁴).

The spelling of 1403998 in words is "one million, four hundred three thousand, nine hundred ninety-eight".