34999381 has 2 divisors, whose sum is σ = 34999382. Its totient is φ = 34999380.

The previous prime is 34999369. The next prime is 34999397. The reversal of 34999381 is 18399943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32547025 + 2452356 = 5705^2 + 1566^2 .

It is an emirp because it is prime and its reverse (18399943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34999381 - 2¹⁹ = 34475093 is a prime.

It is a super-2 number, since 2×34999381² = 2449913340766322, 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 (34979381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17499690 + 17499691.

It is an arithmetic number, because the mean of its divisors is an integer number (17499691).

Almost surely, 2^34999381 is an apocalyptic number.

It is an amenable number.

34999381 is a deficient number, since it is larger than the sum of its proper divisors (1).

34999381 is an equidigital number, since it uses as much as digits as its factorization.

34999381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 46.

The square root of 34999381 is about 5916.0274678199. The cubic root of 34999381 is about 327.1047026360.

It can be divided in two parts, 3499 and 9381, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 34999381 in words is "thirty-four million, nine hundred ninety-nine thousand, three hundred eighty-one".