39400213 has 2 divisors, whose sum is σ = 39400214. Its totient is φ = 39400212.

The previous prime is 39400187. The next prime is 39400297. The reversal of 39400213 is 31200493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38229489 + 1170724 = 6183^2 + 1082^2 .

It is a cyclic number.

It is not a de Polignac number, because 39400213 - 2¹⁷ = 39269141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39400313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19700106 + 19700107.

It is an arithmetic number, because the mean of its divisors is an integer number (19700107).

Almost surely, 2^39400213 is an apocalyptic number.

It is an amenable number.

39400213 is a deficient number, since it is larger than the sum of its proper divisors (1).

39400213 is an equidigital number, since it uses as much as digits as its factorization.

39400213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 39400213 is about 6276.9588974280. The cubic root of 39400213 is about 340.2772047272.

The spelling of 39400213 in words is "thirty-nine million, four hundred thousand, two hundred thirteen".