39850969 has 2 divisors, whose sum is σ = 39850970. Its totient is φ = 39850968.

The previous prime is 39850963. The next prime is 39850991. The reversal of 39850969 is 96905893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20385225 + 19465744 = 4515^2 + 4412^2 .

It is a cyclic number.

It is not a de Polignac number, because 39850969 - 2⁹ = 39850457 is a prime.

It is a super-2 number, since 2×39850969² = 3176199460477922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39850963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19925484 + 19925485.

It is an arithmetic number, because the mean of its divisors is an integer number (19925485).

Almost surely, 2^39850969 is an apocalyptic number.

It is an amenable number.

39850969 is a deficient number, since it is larger than the sum of its proper divisors (1).

39850969 is an equidigital number, since it uses as much as digits as its factorization.

39850969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 39850969 is about 6312.7623905862. The cubic root of 39850969 is about 341.5699283795.

The spelling of 39850969 in words is "thirty-nine million, eight hundred fifty thousand, nine hundred sixty-nine".