39345949 has 2 divisors, whose sum is σ = 39345950. Its totient is φ = 39345948.

The previous prime is 39345899. The next prime is 39345959. The reversal of 39345949 is 94954393.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21325924 + 18020025 = 4618^2 + 4245^2 .

It is a cyclic number.

It is not a de Polignac number, because 39345949 - 2⁷ = 39345821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39345899 and 39345908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39345959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19672974 + 19672975.

It is an arithmetic number, because the mean of its divisors is an integer number (19672975).

Almost surely, 2^39345949 is an apocalyptic number.

It is an amenable number.

39345949 is a deficient number, since it is larger than the sum of its proper divisors (1).

39345949 is an equidigital number, since it uses as much as digits as its factorization.

39345949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 46.

The square root of 39345949 is about 6272.6349327854. The cubic root of 39345949 is about 340.1209171997.

The spelling of 39345949 in words is "thirty-nine million, three hundred forty-five thousand, nine hundred forty-nine".