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133401409 is a prime number
BaseRepresentation
bin1111111001110…
…00101101000001
3100022000111022221
413330320231001
5233122321114
621123131041
73206615251
oct774705501
9308014287
10133401409
11693354a9
1238813a81
1321839a5b
1413a07961
15baa1524
hex7f38b41

133401409 has 2 divisors, whose sum is σ = 133401410. Its totient is φ = 133401408.

The previous prime is 133401353. The next prime is 133401439. The reversal of 133401409 is 904104331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108680625 + 24720784 = 10425^2 + 4972^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-133401409 is a prime.

It is not a weakly prime, because it can be changed into another prime (133401439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66700704 + 66700705.

It is an arithmetic number, because the mean of its divisors is an integer number (66700705).

Almost surely, 2133401409 is an apocalyptic number.

It is an amenable number.

133401409 is a deficient number, since it is larger than the sum of its proper divisors (1).

133401409 is an equidigital number, since it uses as much as digits as its factorization.

133401409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 133401409 is about 11549.9527704662. The cubic root of 133401409 is about 510.9598851786.

The spelling of 133401409 in words is "one hundred thirty-three million, four hundred one thousand, four hundred nine".