354397805 has 6 divisors (see below), whose sum is σ = 425327886. Its totient is φ = 283484568.

The previous prime is 354397801. The next prime is 354397817. The reversal of 354397805 is 508793453.

It can be written as a sum of positive squares in only one way, i.e., 283518244 + 70879561 = 16838^2 + 8419^2 .

It is not a de Polignac number, because 354397805 - 2² = 354397801 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 (354397801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37886 + ... + 46304.

It is an arithmetic number, because the mean of its divisors is an integer number (70887981).

Almost surely, 2^354397805 is an apocalyptic number.

It is an amenable number.

354397805 is a deficient number, since it is larger than the sum of its proper divisors (70930081).

354397805 is an frugal number, since it uses more digits than its factorization.

354397805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16843 (or 8424 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 44.

The square root of 354397805 is about 18825.4563025707. The cubic root of 354397805 is about 707.6692765471.

The spelling of 354397805 in words is "three hundred fifty-four million, three hundred ninety-seven thousand, eight hundred five".