40783849 has 2 divisors, whose sum is σ = 40783850. Its totient is φ = 40783848.

The previous prime is 40783789. The next prime is 40783877. The reversal of 40783849 is 94838704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38837824 + 1946025 = 6232^2 + 1395^2 .

It is a cyclic number.

It is not a de Polignac number, because 40783849 - 2¹⁹ = 40259561 is a prime.

It is not a weakly prime, because it can be changed into another prime (40783349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20391924 + 20391925.

It is an arithmetic number, because the mean of its divisors is an integer number (20391925).

Almost surely, 2^40783849 is an apocalyptic number.

It is an amenable number.

40783849 is a deficient number, since it is larger than the sum of its proper divisors (1).

40783849 is an equidigital number, since it uses as much as digits as its factorization.

40783849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 40783849 is about 6386.2233753604. The cubic root of 40783849 is about 344.2146921265.

The spelling of 40783849 in words is "forty million, seven hundred eighty-three thousand, eight hundred forty-nine".