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9090010101 = 37938354473
BaseRepresentation
bin10000111011100111…
…01000101111110101
3212110111110100122210
420131303220233311
5122104020310401
64101554244033
7441154545114
oct103563505765
925414410583
109090010101
11394508a147
121918286619
13b1b306a03
14623365c7b
1538305b4d6
hex21dce8bf5

9090010101 has 8 divisors (see below), whose sum is σ = 12273431680. Its totient is φ = 5983297632.

The previous prime is 9090010093. The next prime is 9090010129. The reversal of 9090010101 is 1010100909.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9090010101 - 23 = 9090010093 is a prime.

It is a Duffinian number.

9090010101 is a modest number, since divided by 10101 gives 9090 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9090110101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19177000 + ... + 19177473.

It is an arithmetic number, because the mean of its divisors is an integer number (1534178960).

Almost surely, 29090010101 is an apocalyptic number.

It is an amenable number.

9090010101 is a deficient number, since it is larger than the sum of its proper divisors (3183421579).

9090010101 is a wasteful number, since it uses less digits than its factorization.

9090010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38354555.

The product of its (nonzero) digits is 81, while the sum is 21.

The square root of 9090010101 is about 95341.5444651491. The cubic root of 9090010101 is about 2086.9952243405.

The spelling of 9090010101 in words is "nine billion, ninety million, ten thousand, one hundred one".

Divisors: 1 3 79 237 38354473 115063419 3030003367 9090010101