34487881 has 2 divisors, whose sum is σ = 34487882. Its totient is φ = 34487880.

The previous prime is 34487857. The next prime is 34487891. The reversal of 34487881 is 18878443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34327881 + 160000 = 5859^2 + 400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34487881 is a prime.

It is a super-2 number, since 2×34487881² = 2378827871740322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (34487821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17243940 + 17243941.

It is an arithmetic number, because the mean of its divisors is an integer number (17243941).

Almost surely, 2^34487881 is an apocalyptic number.

It is an amenable number.

34487881 is a deficient number, since it is larger than the sum of its proper divisors (1).

34487881 is an equidigital number, since it uses as much as digits as its factorization.

34487881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172032, while the sum is 43.

The square root of 34487881 is about 5872.6383338326. The cubic root of 34487881 is about 325.5033808756.

The spelling of 34487881 in words is "thirty-four million, four hundred eighty-seven thousand, eight hundred eighty-one".