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4972109 = 17292477
BaseRepresentation
bin10010111101111001001101
3100100121110012
4102331321031
52233101414
6254323005
760155642
oct22757115
910317405
104972109
11289668a
1217b9465
13105119c
14935dc9
1568333e
hex4bde4d

4972109 has 4 divisors (see below), whose sum is σ = 5264604. Its totient is φ = 4679616.

The previous prime is 4972081. The next prime is 4972127. The reversal of 4972109 is 9012794.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2402500 + 2569609 = 1550^2 + 1603^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-4972109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4972159) 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, 146222 + ... + 146255.

It is an arithmetic number, because the mean of its divisors is an integer number (1316151).

Almost surely, 24972109 is an apocalyptic number.

It is an amenable number.

4972109 is a deficient number, since it is larger than the sum of its proper divisors (292495).

4972109 is a wasteful number, since it uses less digits than its factorization.

4972109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292494.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 4972109 is about 2229.8226386868. The cubic root of 4972109 is about 170.6790486995.

The spelling of 4972109 in words is "four million, nine hundred seventy-two thousand, one hundred nine".

Divisors: 1 17 292477 4972109