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99921305 = 5114173607
BaseRepresentation
bin1011111010010…
…10110110011001
320222000112021002
411331022312121
5201034440210
613525354345
72322213521
oct575126631
9228015232
1099921305
11514483a0
12295689b5
1317916a43
14d3b0681
158b8b4a5
hex5f4ad99

99921305 has 32 divisors (see below), whose sum is σ = 136055808. Its totient is φ = 69811200.

The previous prime is 99921221. The next prime is 99921313. The reversal of 99921305 is 50312999.

It is not a de Polignac number, because 99921305 - 210 = 99920281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164312 + ... + 164918.

It is an arithmetic number, because the mean of its divisors is an integer number (4251744).

Almost surely, 299921305 is an apocalyptic number.

It is an amenable number.

99921305 is a deficient number, since it is larger than the sum of its proper divisors (36134503).

99921305 is a wasteful number, since it uses less digits than its factorization.

99921305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737.

The product of its (nonzero) digits is 21870, while the sum is 38.

The square root of 99921305 is about 9996.0644755824. The cubic root of 99921305 is about 464.0370947974.

The spelling of 99921305 in words is "ninety-nine million, nine hundred twenty-one thousand, three hundred five".

Divisors: 1 5 11 41 55 73 205 365 451 607 803 2255 2993 3035 4015 6677 14965 24887 32923 33385 44311 124435 164615 221555 273757 487421 1368785 1816751 2437105 9083755 19984261 99921305