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40404961 is a prime number
BaseRepresentation
bin1001101000100…
…0011111100001
32211000210012001
42122020133201
540320424321
64002004001
71000302502
oct232103741
984023161
1040404961
1120897933
1211646601
1384a8c7c
14551aba9
153831c91
hex26887e1

40404961 has 2 divisors, whose sum is σ = 40404962. Its totient is φ = 40404960.

The previous prime is 40404941. The next prime is 40404977. The reversal of 40404961 is 16940404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33350625 + 7054336 = 5775^2 + 2656^2 .

It is a cyclic number.

It is not a de Polignac number, because 40404961 - 215 = 40372193 is a prime.

It is not a weakly prime, because it can be changed into another prime (40404941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20202480 + 20202481.

It is an arithmetic number, because the mean of its divisors is an integer number (20202481).

Almost surely, 240404961 is an apocalyptic number.

It is an amenable number.

40404961 is a deficient number, since it is larger than the sum of its proper divisors (1).

40404961 is an equidigital number, since it uses as much as digits as its factorization.

40404961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 40404961 is about 6356.4896759139. The cubic root of 40404961 is about 343.1454389215.

The spelling of 40404961 in words is "forty million, four hundred four thousand, nine hundred sixty-one".