11927829401 has 2 divisors, whose sum is σ = 11927829402. Its totient is φ = 11927829400.

The previous prime is 11927829349. The next prime is 11927829449. The reversal of 11927829401 is 10492872911.

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., 11920272400 + 7557001 = 109180^2 + 2749^2 .

It is a cyclic number.

It is not a de Polignac number, because 11927829401 - 2¹⁸ = 11927567257 is a prime.

It is a super-2 number, since 2×11927829401² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11927829461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5963914700 + 5963914701.

It is an arithmetic number, because the mean of its divisors is an integer number (5963914701).

Almost surely, 2^11927829401 is an apocalyptic number.

It is an amenable number.

11927829401 is a deficient number, since it is larger than the sum of its proper divisors (1).

11927829401 is an equidigital number, since it uses as much as digits as its factorization.

11927829401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 44.

The spelling of 11927829401 in words is "eleven billion, nine hundred twenty-seven million, eight hundred twenty-nine thousand, four hundred one".