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1999894 = 21376919
BaseRepresentation
bin111101000010000010110
310202121100011
413220100112
51002444034
6110510434
722666411
oct7502026
93677304
101999894
111146606
1280541a
13550390
143a0b78
15297864
hex1e8416

1999894 has 8 divisors (see below), whose sum is σ = 3230640. Its totient is φ = 923016.

The previous prime is 1999891. The next prime is 1999957. The reversal of 1999894 is 4989991.

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

It is a super-2 number, since 2×19998942 = 7999152022472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999891) 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, 38434 + ... + 38485.

It is an arithmetic number, because the mean of its divisors is an integer number (403830).

21999894 is an apocalyptic number.

1999894 is a deficient number, since it is larger than the sum of its proper divisors (1230746).

1999894 is a wasteful number, since it uses less digits than its factorization.

1999894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76934.

The product of its digits is 209952, while the sum is 49.

The square root of 1999894 is about 1414.1760852171. The cubic root of 1999894 is about 125.9898790896.

The spelling of 1999894 in words is "one million, nine hundred ninety-nine thousand, eight hundred ninety-four".

Divisors: 1 2 13 26 76919 153838 999947 1999894