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422409 = 31310831
BaseRepresentation
bin1100111001000001001
3210110102210
41213020021
5102004114
613015333
73406341
oct1471011
9713383
10422409
112693a9
12184549
1311a360
14add21
1585259
hex67209

422409 has 8 divisors (see below), whose sum is σ = 606592. Its totient is φ = 259920.

The previous prime is 422407. The next prime is 422431. The reversal of 422409 is 904224.

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

It is not a de Polignac number, because 422409 - 21 = 422407 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 422409.

It is not an unprimeable number, because it can be changed into a prime (422407) 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, 5377 + ... + 5454.

It is an arithmetic number, because the mean of its divisors is an integer number (75824).

2422409 is an apocalyptic number.

It is an amenable number.

422409 is a deficient number, since it is larger than the sum of its proper divisors (184183).

422409 is a wasteful number, since it uses less digits than its factorization.

422409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10847.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 422409 is about 649.9299962304. The cubic root of 422409 is about 75.0316311022.

The spelling of 422409 in words is "four hundred twenty-two thousand, four hundred nine".

Divisors: 1 3 13 39 10831 32493 140803 422409