395053391 has 4 divisors (see below), whose sum is σ = 395150784. Its totient is φ = 394956000.

The previous prime is 395053381. The next prime is 395053397. The reversal of 395053391 is 193350593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 193350593 = 19 ⋅10176347.

It is a cyclic number.

It is not a de Polignac number, because 395053391 - 2¹⁸ = 394791247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395053397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42335 + ... + 50816.

It is an arithmetic number, because the mean of its divisors is an integer number (98787696).

Almost surely, 2^395053391 is an apocalyptic number.

395053391 is a deficient number, since it is larger than the sum of its proper divisors (97393).

395053391 is an equidigital number, since it uses as much as digits as its factorization.

395053391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97392.

The product of its (nonzero) digits is 54675, while the sum is 38.

The square root of 395053391 is about 19875.9500653428. The cubic root of 395053391 is about 733.7564490532.

The spelling of 395053391 in words is "three hundred ninety-five million, fifty-three thousand, three hundred ninety-one".