39403361 has 2 divisors, whose sum is σ = 39403362. Its totient is φ = 39403360.

The previous prime is 39403339. The next prime is 39403369. The reversal of 39403361 is 16330493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37210000 + 2193361 = 6100^2 + 1481^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39403361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39403369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19701680 + 19701681.

It is an arithmetic number, because the mean of its divisors is an integer number (19701681).

Almost surely, 2^39403361 is an apocalyptic number.

It is an amenable number.

39403361 is a deficient number, since it is larger than the sum of its proper divisors (1).

39403361 is an equidigital number, since it uses as much as digits as its factorization.

39403361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 39403361 is about 6277.2096507923. The cubic root of 39403361 is about 340.2862669803.

The spelling of 39403361 in words is "thirty-nine million, four hundred three thousand, three hundred sixty-one".