1346776421 has 16 divisors (see below), whose sum is σ = 1394500800. Its totient is φ = 1300105728.

The previous prime is 1346776381. The next prime is 1346776511. The reversal of 1346776421 is 1246776431.

It is a cyclic number.

It is not a de Polignac number, because 1346776421 - 2²² = 1342582117 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 (1346776021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 794651 + ... + 796343.

It is an arithmetic number, because the mean of its divisors is an integer number (87156300).

Almost surely, 2^1346776421 is an apocalyptic number.

It is an amenable number.

1346776421 is a deficient number, since it is larger than the sum of its proper divisors (47724379).

1346776421 is a wasteful number, since it uses less digits than its factorization.

1346776421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988.

The product of its digits is 169344, while the sum is 41.

The square root of 1346776421 is about 36698.4525695567. The cubic root of 1346776421 is about 1104.3290620665.

The spelling of 1346776421 in words is "one billion, three hundred forty-six million, seven hundred seventy-six thousand, four hundred twenty-one".