2520392447 has 4 divisors (see below), whose sum is σ = 2539632216. Its totient is φ = 2501152680.

The previous prime is 2520392423. The next prime is 2520392471. The reversal of 2520392447 is 7442930252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2520392423) and next prime (2520392471).

It is a cyclic number.

It is not a de Polignac number, because 2520392447 - 2¹⁶ = 2520326911 is a prime.

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 2520392447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520392747) 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, 9619688 + ... + 9619949.

It is an arithmetic number, because the mean of its divisors is an integer number (634908054).

Almost surely, 2^2520392447 is an apocalyptic number.

2520392447 is a deficient number, since it is larger than the sum of its proper divisors (19239769).

2520392447 is a wasteful number, since it uses less digits than its factorization.

2520392447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19239768.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 2520392447 is about 50203.5103055553. The cubic root of 2520392447 is about 1360.8890609403.

The spelling of 2520392447 in words is "two billion, five hundred twenty million, three hundred ninety-two thousand, four hundred forty-seven".