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40908091 = 72834859
BaseRepresentation
bin1001110000001…
…1010100111011
32211222100100111
42130003110323
540433024331
64020445151
71004466400
oct234032473
984870314
1040908091
1121100944
12118497b7
138623c93
14560c2a7
1538d0db1
hex270353b

40908091 has 6 divisors (see below), whose sum is σ = 47587020. Its totient is φ = 35064036.

The previous prime is 40908089. The next prime is 40908107. The reversal of 40908091 is 19080904.

40908091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40908091 - 21 = 40908089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40908041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 417381 + ... + 417478.

It is an arithmetic number, because the mean of its divisors is an integer number (7931170).

Almost surely, 240908091 is an apocalyptic number.

40908091 is a deficient number, since it is larger than the sum of its proper divisors (6678929).

40908091 is an equidigital number, since it uses as much as digits as its factorization.

40908091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834873 (or 834866 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 40908091 is about 6395.9433237014. The cubic root of 40908091 is about 344.5638709434.

Adding to 40908091 its reverse (19080904), we get a palindrome (59988995).

The spelling of 40908091 in words is "forty million, nine hundred eight thousand, ninety-one".

Divisors: 1 7 49 834859 5844013 40908091