395740357 has 2 divisors, whose sum is σ = 395740358. Its totient is φ = 395740356.

The previous prime is 395740343. The next prime is 395740361. The reversal of 395740357 is 753047593.

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., 385493956 + 10246401 = 19634^2 + 3201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395740357 is a prime.

It is a super-2 number, since 2×395740357² = 313220860316974898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395740307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197870178 + 197870179.

It is an arithmetic number, because the mean of its divisors is an integer number (197870179).

Almost surely, 2^395740357 is an apocalyptic number.

It is an amenable number.

395740357 is a deficient number, since it is larger than the sum of its proper divisors (1).

395740357 is an equidigital number, since it uses as much as digits as its factorization.

395740357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 396900, while the sum is 43.

The square root of 395740357 is about 19893.2238965935. The cubic root of 395740357 is about 734.1815171998.

The spelling of 395740357 in words is "three hundred ninety-five million, seven hundred forty thousand, three hundred fifty-seven".