Search a number
-
+
69406983489 = 3191579771163
BaseRepresentation
bin100000010100011111…
…0101000010101000001
320122011002111002011010
41000220332220111001
52114121141432424
651515104311133
75004653424354
oct1005076502501
9218132432133
1069406983489
1127487483a88
12115503124a9
1367116255cc
143505d6a29b
151c13522229
hex1028fa8541

69406983489 has 16 divisors (see below), whose sum is σ = 97475129600. Its totient is φ = 43808170896.

The previous prime is 69406983439. The next prime is 69406983493. The reversal of 69406983489 is 98438960496.

It is not a de Polignac number, because 69406983489 - 27 = 69406983361 is a prime.

It is a super-2 number, since 2×694069834892 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (69406983439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295579 + ... + 475584.

It is an arithmetic number, because the mean of its divisors is an integer number (6092195600).

Almost surely, 269406983489 is an apocalyptic number.

It is an amenable number.

69406983489 is a deficient number, since it is larger than the sum of its proper divisors (28068146111).

69406983489 is a wasteful number, since it uses less digits than its factorization.

69406983489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772764.

The product of its (nonzero) digits is 80621568, while the sum is 66.

The spelling of 69406983489 in words is "sixty-nine billion, four hundred six million, nine hundred eighty-three thousand, four hundred eighty-nine".

Divisors: 1 3 19 57 1579 4737 30001 90003 771163 2313489 14652097 43956291 1217666377 3652999131 23135661163 69406983489