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4239481 = 292712
BaseRepresentation
bin10000001011000001111001
321222101110211
4100023001321
52041130411
6230511121
751015001
oct20130171
97871424
104239481
112436204
1215054a1
13b5588c
147c5001
1558b221
hex40b079

4239481 has 9 divisors (see below), whose sum is σ = 4453423. Its totient is φ = 4035640.

The previous prime is 4239479. The next prime is 4239491. The reversal of 4239481 is 1849324.

The square root of 4239481 is 2059.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2223081 + 2016400 = 1491^2 + 1420^2 .

It is not a de Polignac number, because 4239481 - 21 = 4239479 is a prime.

It is a super-2 number, since 2×42394812 = 35946398298722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4239401) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 59676 + ... + 59746.

Almost surely, 24239481 is an apocalyptic number.

4239481 is the 2059-th square number.

4239481 is the 1030-th centered octagonal number.

It is an amenable number.

4239481 is a deficient number, since it is larger than the sum of its proper divisors (213942).

4239481 is an frugal number, since it uses more digits than its factorization.

4239481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 100 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The cubic root of 4239481 is about 161.8468424958.

The spelling of 4239481 in words is "four million, two hundred thirty-nine thousand, four hundred eighty-one".

Divisors: 1 29 71 841 2059 5041 59711 146189 4239481