345448493 has 16 divisors (see below), whose sum is σ = 394254000. Its totient is φ = 300357120.

The previous prime is 345448487. The next prime is 345448511. The reversal of 345448493 is 394844543.

It can be written as a sum of positive squares in 8 ways, for example, as 127531849 + 217916644 = 11293^2 + 14762^2 .

It is a cyclic number.

It is not a de Polignac number, because 345448493 - 2⁸ = 345448237 is a prime.

It is a super-2 number, since 2×345448493² = 238669322631942098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345448403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4283 + ... + 26631.

It is an arithmetic number, because the mean of its divisors is an integer number (24640875).

Almost surely, 2^345448493 is an apocalyptic number.

It is an amenable number.

345448493 is a deficient number, since it is larger than the sum of its proper divisors (48805507).

345448493 is a wasteful number, since it uses less digits than its factorization.

345448493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22432.

The product of its digits is 829440, while the sum is 44.

The square root of 345448493 is about 18586.2447256029. The cubic root of 345448493 is about 701.6616937665.

The spelling of 345448493 in words is "three hundred forty-five million, four hundred forty-eight thousand, four hundred ninety-three".