3427784957 has 4 divisors (see below), whose sum is σ = 3471174720. Its totient is φ = 3384395196.

The previous prime is 3427784929. The next prime is 3427784977. The reversal of 3427784957 is 7594877243.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7594877243 = 227 ⋅33457609.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3427784957 is a prime.

It is a super-2 number, since 2×3427784957² = 23499419422870983698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3427784977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21694763 + ... + 21694920.

It is an arithmetic number, because the mean of its divisors is an integer number (867793680).

Almost surely, 2^3427784957 is an apocalyptic number.

It is an amenable number.

3427784957 is a deficient number, since it is larger than the sum of its proper divisors (43389763).

3427784957 is an equidigital number, since it uses as much as digits as its factorization.

3427784957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43389762.

The product of its digits is 11854080, while the sum is 56.

The square root of 3427784957 is about 58547.2882121794. The cubic root of 3427784957 is about 1507.7795760079.

The spelling of 3427784957 in words is "three billion, four hundred twenty-seven million, seven hundred eighty-four thousand, nine hundred fifty-seven".