40705283 has 2 divisors, whose sum is σ = 40705284. Its totient is φ = 40705282.

The previous prime is 40705229. The next prime is 40705289. The reversal of 40705283 is 38250704.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40705283 - 2¹⁰ = 40704259 is a prime.

It is a super-2 number, since 2×40705283² = 3313840128220178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40705289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20352641 + 20352642.

It is an arithmetic number, because the mean of its divisors is an integer number (20352642).

Almost surely, 2^40705283 is an apocalyptic number.

40705283 is a deficient number, since it is larger than the sum of its proper divisors (1).

40705283 is an equidigital number, since it uses as much as digits as its factorization.

40705283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 40705283 is about 6380.0692002517. The cubic root of 40705283 is about 343.9935183338.

Adding to 40705283 its reverse (38250704), we get a palindrome (78955987).

The spelling of 40705283 in words is "forty million, seven hundred five thousand, two hundred eighty-three".