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99999401 is a prime number
BaseRepresentation
bin1011111010111…
…01111010101001
320222011111101112
411331131322221
5201044440101
613531200105
72322660305
oct575357251
9228144345
1099999401
11514a1037
12295a6035
1317943458
14d3d0d05
158ba46bb
hex5f5dea9

99999401 has 2 divisors, whose sum is σ = 99999402. Its totient is φ = 99999400.

The previous prime is 99999373. The next prime is 99999437. The reversal of 99999401 is 10499999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97515625 + 2483776 = 9875^2 + 1576^2 .

It is a cyclic number.

It is not a de Polignac number, because 99999401 - 210 = 99998377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99999401.

It is not a weakly prime, because it can be changed into another prime (99999481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999700 + 49999701.

It is an arithmetic number, because the mean of its divisors is an integer number (49999701).

Almost surely, 299999401 is an apocalyptic number.

It is an amenable number.

99999401 is a deficient number, since it is larger than the sum of its proper divisors (1).

99999401 is an equidigital number, since it uses as much as digits as its factorization.

99999401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 236196, while the sum is 50.

The square root of 99999401 is about 9999.9700499551. The cubic root of 99999401 is about 464.1579565889.

The spelling of 99999401 in words is "ninety-nine million, nine hundred ninety-nine thousand, four hundred one".