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40997 = 113727
BaseRepresentation
bin1010000000100101
32002020102
422000211
52302442
6513445
7230345
oct120045
962212
1040997
1128890
121b885
1315878
1410d25
15c232
hexa025

40997 has 4 divisors (see below), whose sum is σ = 44736. Its totient is φ = 37260.

The previous prime is 40993. The next prime is 41011. The reversal of 40997 is 79904.

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 40997 - 22 = 40993 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1853 + ... + 1874.

It is an arithmetic number, because the mean of its divisors is an integer number (11184).

240997 is an apocalyptic number.

It is an amenable number.

40997 is a deficient number, since it is larger than the sum of its proper divisors (3739).

40997 is a wasteful number, since it uses less digits than its factorization.

40997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 40997 is about 202.4771592057. The cubic root of 40997 is about 34.4813313547.

The spelling of 40997 in words is "forty thousand, nine hundred ninety-seven".

Divisors: 1 11 3727 40997