39550223 has 2 divisors, whose sum is σ = 39550224. Its totient is φ = 39550222.

The previous prime is 39550219. The next prime is 39550253. The reversal of 39550223 is 32205593.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39550223 - 2² = 39550219 is a prime.

It is a super-4 number, since 4×39550223⁴ (a number of 31 digits) contains 4444 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39550253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19775111 + 19775112.

It is an arithmetic number, because the mean of its divisors is an integer number (19775112).

Almost surely, 2^39550223 is an apocalyptic number.

39550223 is a deficient number, since it is larger than the sum of its proper divisors (1).

39550223 is an equidigital number, since it uses as much as digits as its factorization.

39550223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 39550223 is about 6288.8968030967. The cubic root of 39550223 is about 340.7085081341.

The spelling of 39550223 in words is "thirty-nine million, five hundred fifty thousand, two hundred twenty-three".