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199999297 = 6115712087
BaseRepresentation
bin10111110101110…
…11111101000001
3111221100000110101
423322323331001
5402144434142
631502402401
74645652221
oct1372737501
9457300411
10199999297
11a2992483
1256b90401
1332586ba4
141c7c2081
15128590b7
hexbebbf41

199999297 has 8 divisors (see below), whose sum is σ = 203504832. Its totient is φ = 196501200.

The previous prime is 199999279. The next prime is 199999307. The reversal of 199999297 is 792999991.

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

It is a cyclic number.

It is not a de Polignac number, because 199999297 - 219 = 199475009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199999277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94788 + ... + 96874.

It is an arithmetic number, because the mean of its divisors is an integer number (25438104).

Almost surely, 2199999297 is an apocalyptic number.

It is an amenable number.

199999297 is a deficient number, since it is larger than the sum of its proper divisors (3505535).

199999297 is a wasteful number, since it uses less digits than its factorization.

199999297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3719.

The product of its digits is 7440174, while the sum is 64.

The square root of 199999297 is about 14142.1107689058. The cubic root of 199999297 is about 584.8028624469.

The spelling of 199999297 in words is "one hundred ninety-nine million, nine hundred ninety-nine thousand, two hundred ninety-seven".

Divisors: 1 61 1571 2087 95831 127307 3278677 199999297