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4000427 = 5237649
BaseRepresentation
bin1111010000101010101011
321112020112222
433100222223
52011003202
6221424255
746001024
oct17205253
97466488
104000427
112292642
12140b08b
13aa0b22
14761c4b
155404a2
hex3d0aab

4000427 has 4 divisors (see below), whose sum is σ = 4008600. Its totient is φ = 3992256.

The previous prime is 4000379. The next prime is 4000439. The reversal of 4000427 is 7240004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-4000427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4003427) 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, 3302 + ... + 4347.

It is an arithmetic number, because the mean of its divisors is an integer number (1002150).

Almost surely, 24000427 is an apocalyptic number.

4000427 is a deficient number, since it is larger than the sum of its proper divisors (8173).

4000427 is an equidigital number, since it uses as much as digits as its factorization.

4000427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8172.

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 4000427 is about 2000.1067471513. The cubic root of 4000427 is about 158.7457534979.

The spelling of 4000427 in words is "four million, four hundred twenty-seven", and thus it is an aban number.

Divisors: 1 523 7649 4000427