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999672499 = 71274212671
BaseRepresentation
bin111011100101011…
…100101010110011
32120200001121212101
4323211130222303
54021404004444
6243110241231
733526035040
oct7345345263
92520047771
10999672499
1147331a821
1223a956217
1312c1540b7
1496aa41c7
155cb693d4
hex3b95cab3

999672499 has 16 divisors (see below), whose sum is σ = 1154646016. Its totient is φ = 847778400.

The previous prime is 999672481. The next prime is 999672511. The reversal of 999672499 is 994276999.

It is not a de Polignac number, because 999672499 - 227 = 865454771 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 999672499.

It is not an unprimeable number, because it can be changed into a prime (999672449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372934 + ... + 375604.

It is an arithmetic number, because the mean of its divisors is an integer number (72165376).

Almost surely, 2999672499 is an apocalyptic number.

999672499 is a deficient number, since it is larger than the sum of its proper divisors (154973517).

999672499 is a wasteful number, since it uses less digits than its factorization.

999672499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226.

The product of its digits is 19840464, while the sum is 64.

The square root of 999672499 is about 31617.5979321643. The cubic root of 999672499 is about 999.8908210804.

The spelling of 999672499 in words is "nine hundred ninety-nine million, six hundred seventy-two thousand, four hundred ninety-nine".

Divisors: 1 7 127 421 889 2671 2947 18697 53467 339217 374269 1124491 2374519 7871437 142810357 999672499