40854431 has 2 divisors, whose sum is σ = 40854432. Its totient is φ = 40854430.

The previous prime is 40854397. The next prime is 40854439. The reversal of 40854431 is 13445804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40854431 - 2⁶ = 40854367 is a prime.

It is a super-2 number, since 2×40854431² = 3338169064667522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40854394 and 40854403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40854439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20427215 + 20427216.

It is an arithmetic number, because the mean of its divisors is an integer number (20427216).

Almost surely, 2^40854431 is an apocalyptic number.

40854431 is a deficient number, since it is larger than the sum of its proper divisors (1).

40854431 is an equidigital number, since it uses as much as digits as its factorization.

40854431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 40854431 is about 6391.7471007542. The cubic root of 40854431 is about 344.4131478058.

The spelling of 40854431 in words is "forty million, eight hundred fifty-four thousand, four hundred thirty-one".