354919391 has 2 divisors, whose sum is σ = 354919392. Its totient is φ = 354919390.

The previous prime is 354919363. The next prime is 354919393. The reversal of 354919391 is 193919453.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354919391 is a prime.

Together with 354919393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354919393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177459695 + 177459696.

It is an arithmetic number, because the mean of its divisors is an integer number (177459696).

Almost surely, 2^354919391 is an apocalyptic number.

354919391 is a deficient number, since it is larger than the sum of its proper divisors (1).

354919391 is an equidigital number, since it uses as much as digits as its factorization.

354919391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131220, while the sum is 44.

The square root of 354919391 is about 18839.3044192189. The cubic root of 354919391 is about 708.0162778078.

The spelling of 354919391 in words is "three hundred fifty-four million, nine hundred nineteen thousand, three hundred ninety-one".