1339924521 has 8 divisors (see below), whose sum is σ = 1923994240. Its totient is φ = 824568912.

The previous prime is 1339924519. The next prime is 1339924561. The reversal of 1339924521 is 1254299331.

1339924521 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1339924521 - 2¹ = 1339924519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 34357039 = 1339924521 / (1 + 3 + 3 + 9 + 9 + 2 + 4 + 5 + 2 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1339924521.

It is not an unprimeable number, because it can be changed into a prime (1339924561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17178481 + ... + 17178558.

It is an arithmetic number, because the mean of its divisors is an integer number (240499280).

Almost surely, 2^1339924521 is an apocalyptic number.

It is an amenable number.

1339924521 is a deficient number, since it is larger than the sum of its proper divisors (584069719).

1339924521 is a wasteful number, since it uses less digits than its factorization.

1339924521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34357055.

The product of its digits is 58320, while the sum is 39.

The square root of 1339924521 is about 36604.9794563527. The cubic root of 1339924521 is about 1102.4530711561.

The spelling of 1339924521 in words is "one billion, three hundred thirty-nine million, nine hundred twenty-four thousand, five hundred twenty-one".