Search a number
-
+
397201748809 = 3157122439509
BaseRepresentation
bin1011100011110110001…
…00011011001101001001
31101222020200011110222211
411301323010123031021
523001432121430214
6502245535545121
740461013105165
oct5617304331511
91358220143884
10397201748809
111434a8039908
1264b9208b1a1
132b5c09a40c8
14153206b5ca5
15a4eae070c4
hex5c7b11b349

397201748809 has 8 divisors (see below), whose sum is σ = 410732791040. Its totient is φ = 383715586800.

The previous prime is 397201748803. The next prime is 397201748843. The reversal of 397201748809 is 908847102793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 397201748809 - 25 = 397201748777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397201748803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11202054 + ... + 11237455.

It is an arithmetic number, because the mean of its divisors is an integer number (51341598880).

Almost surely, 2397201748809 is an apocalyptic number.

It is an amenable number.

397201748809 is a deficient number, since it is larger than the sum of its proper divisors (13531042231).

397201748809 is a wasteful number, since it uses less digits than its factorization.

397201748809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22440111.

The product of its (nonzero) digits is 6096384, while the sum is 58.

The spelling of 397201748809 in words is "three hundred ninety-seven billion, two hundred one million, seven hundred forty-eight thousand, eight hundred nine".

Divisors: 1 31 571 17701 22439509 695624779 12812959639 397201748809