34221491 has 2 divisors, whose sum is σ = 34221492. Its totient is φ = 34221490.

The previous prime is 34221463. The next prime is 34221553. The reversal of 34221491 is 19412243.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34221491 is a prime.

It is a super-2 number, since 2×34221491² = 2342220892526162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 34221491.

It is not a weakly prime, because it can be changed into another prime (34221431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17110745 + 17110746.

It is an arithmetic number, because the mean of its divisors is an integer number (17110746).

Almost surely, 2^34221491 is an apocalyptic number.

34221491 is a deficient number, since it is larger than the sum of its proper divisors (1).

34221491 is an equidigital number, since it uses as much as digits as its factorization.

34221491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 34221491 is about 5849.9137600481. The cubic root of 34221491 is about 324.6631333999.

It can be divided in two parts, 3422 and 1491, that added together give a cube (4913 = 17³).

The spelling of 34221491 in words is "thirty-four million, two hundred twenty-one thousand, four hundred ninety-one".