3497421391 has 2 divisors, whose sum is σ = 3497421392. Its totient is φ = 3497421390.

The previous prime is 3497421379. The next prime is 3497421443. The reversal of 3497421391 is 1931247943.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3497421391 - 2¹⁵ = 3497388623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3497421491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1748710695 + 1748710696.

It is an arithmetic number, because the mean of its divisors is an integer number (1748710696).

Almost surely, 2^3497421391 is an apocalyptic number.

3497421391 is a deficient number, since it is larger than the sum of its proper divisors (1).

3497421391 is an equidigital number, since it uses as much as digits as its factorization.

3497421391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 3497421391 is about 59139.0005918260. Note that the first 3 decimals coincide. The cubic root of 3497421391 is about 1517.9215288241.

It can be divided in two parts, 34974 and 21391, that added together give a palindrome (56365).

The spelling of 3497421391 in words is "three billion, four hundred ninety-seven million, four hundred twenty-one thousand, three hundred ninety-one".