514429991 has 2 divisors, whose sum is σ = 514429992. Its totient is φ = 514429990.

The previous prime is 514429987. The next prime is 514430009. The reversal of 514429991 is 199924415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 514429991 - 2² = 514429987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (514423991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257214995 + 257214996.

It is an arithmetic number, because the mean of its divisors is an integer number (257214996).

Almost surely, 2^514429991 is an apocalyptic number.

514429991 is a deficient number, since it is larger than the sum of its proper divisors (1).

514429991 is an equidigital number, since it uses as much as digits as its factorization.

514429991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 44.

The square root of 514429991 is about 22681.0491600367. The cubic root of 514429991 is about 801.2636233317.

The spelling of 514429991 in words is "five hundred fourteen million, four hundred twenty-nine thousand, nine hundred ninety-one".