354878473 has 2 divisors, whose sum is σ = 354878474. Its totient is φ = 354878472.

The previous prime is 354878471. The next prime is 354878479. The reversal of 354878473 is 374878453.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338854464 + 16024009 = 18408^2 + 4003^2 .

It is a cyclic number.

It is not a de Polignac number, because 354878473 - 2¹ = 354878471 is a prime.

Together with 354878471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (354878471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177439236 + 177439237.

It is an arithmetic number, because the mean of its divisors is an integer number (177439237).

Almost surely, 2^354878473 is an apocalyptic number.

It is an amenable number.

354878473 is a deficient number, since it is larger than the sum of its proper divisors (1).

354878473 is an equidigital number, since it uses as much as digits as its factorization.

354878473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 49.

The square root of 354878473 is about 18838.2184136399. The cubic root of 354878473 is about 707.9890681332.

The spelling of 354878473 in words is "three hundred fifty-four million, eight hundred seventy-eight thousand, four hundred seventy-three".