1384628421 has 16 divisors (see below), whose sum is σ = 2020373568. Its totient is φ = 836515200.

The previous prime is 1384628419. The next prime is 1384628459. The reversal of 1384628421 is 1248264831.

It is not a de Polignac number, because 1384628421 - 2¹ = 1384628419 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1384628421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384628411) 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, 55720 + ... + 76641.

It is an arithmetic number, because the mean of its divisors is an integer number (126273348).

Almost surely, 2^1384628421 is an apocalyptic number.

1384628421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1384628421 is a deficient number, since it is larger than the sum of its proper divisors (635745147).

1384628421 is a wasteful number, since it uses less digits than its factorization.

1384628421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132692.

The product of its digits is 73728, while the sum is 39.

The square root of 1384628421 is about 37210.5955475050. The cubic root of 1384628421 is about 1114.5795759213.

The spelling of 1384628421 in words is "one billion, three hundred eighty-four million, six hundred twenty-eight thousand, four hundred twenty-one".