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99819061 = 3472829
BaseRepresentation
bin1011111001100…
…01111000110101
320221211100000021
411330301320311
5201023202221
613523245141
72321306446
oct574617065
9227740007
1099819061
11513885a1
12295197b1
13178ac344
14d3852cd
158b6b041
hex5f31e35

99819061 has 6 divisors (see below), whose sum is σ = 100228310. Its totient is φ = 99411336.

The previous prime is 99819047. The next prime is 99819077. The reversal of 99819061 is 16091899.

It can be written as a sum of positive squares in only one way, i.e., 87778161 + 12040900 = 9369^2 + 3470^2 .

It is not a de Polignac number, because 99819061 - 25 = 99819029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99818999 and 99819017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99819001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119995 + ... + 120823.

Almost surely, 299819061 is an apocalyptic number.

It is an amenable number.

99819061 is a deficient number, since it is larger than the sum of its proper divisors (409249).

99819061 is an frugal number, since it uses more digits than its factorization.

99819061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 43.

The square root of 99819061 is about 9990.9489539283. The cubic root of 99819061 is about 463.8787661989.

The spelling of 99819061 in words is "ninety-nine million, eight hundred nineteen thousand, sixty-one".

Divisors: 1 347 829 120409 287663 99819061