349551287 has 2 divisors, whose sum is σ = 349551288. Its totient is φ = 349551286.

The previous prime is 349551277. The next prime is 349551311. The reversal of 349551287 is 782155943.

It is a weak prime.

It is an emirp because it is prime and its reverse (782155943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 349551287 - 2⁸ = 349551031 is a prime.

It is a super-2 number, since 2×349551287² = 244372204486712738, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349551277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174775643 + 174775644.

It is an arithmetic number, because the mean of its divisors is an integer number (174775644).

Almost surely, 2^349551287 is an apocalyptic number.

349551287 is a deficient number, since it is larger than the sum of its proper divisors (1).

349551287 is an equidigital number, since it uses as much as digits as its factorization.

349551287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 44.

The square root of 349551287 is about 18696.2907283771. The cubic root of 349551287 is about 704.4285811229.

The spelling of 349551287 in words is "three hundred forty-nine million, five hundred fifty-one thousand, two hundred eighty-seven".