Search a number
-
+
99903409 is a prime number
BaseRepresentation
bin1011111010001…
…10011110110001
320221222121201021
411331012132301
5201033402114
613525135441
72322110404
oct575063661
9227877637
1099903409
1151435a01
122955a581
131790b858
14d3a7d3b
158b86024
hex5f467b1

99903409 has 2 divisors, whose sum is σ = 99903410. Its totient is φ = 99903408.

The previous prime is 99903403. The next prime is 99903437. The reversal of 99903409 is 90430999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91259809 + 8643600 = 9553^2 + 2940^2 .

It is a cyclic number.

It is not a de Polignac number, because 99903409 - 27 = 99903281 is a prime.

It is a super-2 number, since 2×999034092 = 19961382259642562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99903403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49951704 + 49951705.

It is an arithmetic number, because the mean of its divisors is an integer number (49951705).

Almost surely, 299903409 is an apocalyptic number.

It is an amenable number.

99903409 is a deficient number, since it is larger than the sum of its proper divisors (1).

99903409 is an equidigital number, since it uses as much as digits as its factorization.

99903409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 99903409 is about 9995.1692832088. The cubic root of 99903409 is about 464.0093899829.

The spelling of 99903409 in words is "ninety-nine million, nine hundred three thousand, four hundred nine".