4239457852 has 18 divisors (see below), whose sum is σ = 8630325312. Its totient is φ = 1816910424.

The previous prime is 4239457843. The next prime is 4239457853. The reversal of 4239457852 is 2587549324.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 4239457796 and 4239457805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4239457853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10814748 + ... + 10815139.

Almost surely, 2^4239457852 is an apocalyptic number.

It is an amenable number.

4239457852 is an abundant number, since it is smaller than the sum of its proper divisors (4390867460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4239457852 is a wasteful number, since it uses less digits than its factorization.

4239457852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21629905 (or 21629896 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 49.

The square root of 4239457852 is about 65111.1192654527. The cubic root of 4239457852 is about 1618.4654792854.

The spelling of 4239457852 in words is "four billion, two hundred thirty-nine million, four hundred fifty-seven thousand, eight hundred fifty-two".