1407445321 has 6 divisors (see below), whose sum is σ = 1415297166. Its totient is φ = 1399636800.

The previous prime is 1407445307. The next prime is 1407445357. The reversal of 1407445321 is 1235447041.

It can be written as a sum of positive squares in 3 ways, for example, as 338155321 + 1069290000 = 18389^2 + 32700^2 .

It is not a de Polignac number, because 1407445321 - 2⁹ = 1407444809 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 (1407445301) 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 in 5 ways as a sum of consecutive naturals, for example, 11281 + ... + 54241.

It is an arithmetic number, because the mean of its divisors is an integer number (235882861).

Almost surely, 2^1407445321 is an apocalyptic number.

It is an amenable number.

1407445321 is a deficient number, since it is larger than the sum of its proper divisors (7851845).

1407445321 is an frugal number, since it uses more digits than its factorization.

1407445321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43323 (or 43142 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 1407445321 is about 37515.9342280050. The cubic root of 1407445321 is about 1120.6685318347.

It can be divided in two parts, 14074 and 45321, that added together give a palindrome (59395).

The spelling of 1407445321 in words is "one billion, four hundred seven million, four hundred forty-five thousand, three hundred twenty-one".