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40189001 = 259115511
BaseRepresentation
bin1001100101001…
…1110001001001
32210121210221112
42121103301021
540242022001
63553220105
7665413046
oct231236111
983553845
1040189001
112075a656
1211561635
138431898
1454a21cd
1537dccbb
hex2653c49

40189001 has 4 divisors (see below), whose sum is σ = 40207104. Its totient is φ = 40170900.

The previous prime is 40188997. The next prime is 40189007. The reversal of 40189001 is 10098104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40189001 - 22 = 40188997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40189007) 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, 5165 + ... + 10346.

It is an arithmetic number, because the mean of its divisors is an integer number (10051776).

Almost surely, 240189001 is an apocalyptic number.

It is an amenable number.

40189001 is a deficient number, since it is larger than the sum of its proper divisors (18103).

40189001 is a wasteful number, since it uses less digits than its factorization.

40189001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18102.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 40189001 is about 6339.4795527709. The cubic root of 40189001 is about 342.5329884577.

The spelling of 40189001 in words is "forty million, one hundred eighty-nine thousand, one".

Divisors: 1 2591 15511 40189001