1269998 has 12 divisors (see below), whose sum is σ = 2011680. Its totient is φ = 601236.

The previous prime is 1269971. The next prime is 1270001. The reversal of 1269998 is 8999621.

It is a super-2 number, since 2×1269998² = 3225789840008, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158 + ... + 1601.

It is an arithmetic number, because the mean of its divisors is an integer number (167640).

2^1269998 is an apocalyptic number.

1269998 is a deficient number, since it is larger than the sum of its proper divisors (741682).

1269998 is a wasteful number, since it uses less digits than its factorization.

1269998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799 (or 1780 counting only the distinct ones).

The product of its digits is 69984, while the sum is 44.

The square root of 1269998 is about 1126.9418796016. The cubic root of 1269998 is about 108.2931564363.

The spelling of 1269998 in words is "one million, two hundred sixty-nine thousand, nine hundred ninety-eight".