3421778727 has 4 divisors (see below), whose sum is σ = 4562371640. Its totient is φ = 2281185816.

The previous prime is 3421778699. The next prime is 3421778777. The reversal of 3421778727 is 7278771243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7278771243 = 3 ⋅2426257081.

It is not a de Polignac number, because 3421778727 - 2¹⁴ = 3421762343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3421778777) 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, 570296452 + ... + 570296457.

It is an arithmetic number, because the mean of its divisors is an integer number (1140592910).

Almost surely, 2^3421778727 is an apocalyptic number.

3421778727 is a deficient number, since it is larger than the sum of its proper divisors (1140592913).

3421778727 is a wasteful number, since it uses less digits than its factorization.

3421778727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140592912.

The product of its digits is 921984, while the sum is 48.

The square root of 3421778727 is about 58495.9718869599. The cubic root of 3421778727 is about 1506.8984077901.

The spelling of 3421778727 in words is "three billion, four hundred twenty-one million, seven hundred seventy-eight thousand, seven hundred twenty-seven".