4945405 has 4 divisors (see below), whose sum is σ = 5934492. Its totient is φ = 3956320.

The previous prime is 4945397. The next prime is 4945411. The reversal of 4945405 is 5045494.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1052676 + 3892729 = 1026^2 + 1973^2 .

It is not a de Polignac number, because 4945405 - 2³ = 4945397 is a prime.

It is a super-2 number, since 2×4945405² = 48914061228050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494536 + ... + 494545.

It is an arithmetic number, because the mean of its divisors is an integer number (1483623).

Almost surely, 2^4945405 is an apocalyptic number.

It is an amenable number.

4945405 is a deficient number, since it is larger than the sum of its proper divisors (989087).

4945405 is an equidigital number, since it uses as much as digits as its factorization.

4945405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989086.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 4945405 is about 2223.8266569137. The cubic root of 4945405 is about 170.3729413455.

It can be divided in two parts, 49 and 45405, that added together give a palindrome (45454).

The spelling of 4945405 in words is "four million, nine hundred forty-five thousand, four hundred five".