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40089839 is a prime number
BaseRepresentation
bin1001100011101…
…1100011101111
32210102202220212
42120323203233
540230333324
63551133035
7664520666
oct230734357
983382825
1040089839
11206a20a9
121151417b
1383c86ca
145477ddd
1537bd70e
hex263b8ef

40089839 has 2 divisors, whose sum is σ = 40089840. Its totient is φ = 40089838.

The previous prime is 40089827. The next prime is 40089869. The reversal of 40089839 is 93898004.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-40089839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40089796 and 40089805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40089869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20044919 + 20044920.

It is an arithmetic number, because the mean of its divisors is an integer number (20044920).

Almost surely, 240089839 is an apocalyptic number.

40089839 is a deficient number, since it is larger than the sum of its proper divisors (1).

40089839 is an equidigital number, since it uses as much as digits as its factorization.

40089839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 40089839 is about 6331.6537334254. The cubic root of 40089839 is about 342.2510354380.

The spelling of 40089839 in words is "forty million, eighty-nine thousand, eight hundred thirty-nine".