348391937 has 2 divisors, whose sum is σ = 348391938. Its totient is φ = 348391936.

The previous prime is 348391913. The next prime is 348391951. The reversal of 348391937 is 739193843.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 346108816 + 2283121 = 18604^2 + 1511^2 .

It is an emirp because it is prime and its reverse (739193843) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 348391937 - 2²⁶ = 281283073 is a prime.

It is a super-2 number, since 2×348391937² = 242753883533223938, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 348391891 and 348391900.

It is not a weakly prime, because it can be changed into another prime (348391997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174195968 + 174195969.

It is an arithmetic number, because the mean of its divisors is an integer number (174195969).

Almost surely, 2^348391937 is an apocalyptic number.

It is an amenable number.

348391937 is a deficient number, since it is larger than the sum of its proper divisors (1).

348391937 is an equidigital number, since it uses as much as digits as its factorization.

348391937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 47.

The square root of 348391937 is about 18665.2601642731. The cubic root of 348391937 is about 703.6489303139.

The spelling of 348391937 in words is "three hundred forty-eight million, three hundred ninety-one thousand, nine hundred thirty-seven".