4247972 has 6 divisors (see below), whose sum is σ = 7433958. Its totient is φ = 2123984.

The previous prime is 4247923. The next prime is 4247981. The reversal of 4247972 is 2797424.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3904576 + 343396 = 1976^2 + 586^2 .

It is a super-2 number, since 2×4247972² = 36090532225568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530993 + ... + 531000.

It is an arithmetic number, because the mean of its divisors is an integer number (1238993).

Almost surely, 2^4247972 is an apocalyptic number.

It is an amenable number.

4247972 is a deficient number, since it is larger than the sum of its proper divisors (3185986).

4247972 is a wasteful number, since it uses less digits than its factorization.

4247972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061997 (or 1061995 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 4247972 is about 2061.0608918710. The cubic root of 4247972 is about 161.9548215226.

The spelling of 4247972 in words is "four million, two hundred forty-seven thousand, nine hundred seventy-two".