3719945 has 4 divisors (see below), whose sum is σ = 4463940. Its totient is φ = 2975952.

The previous prime is 3719939. The next prime is 3719959. The reversal of 3719945 is 5499173.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5499173 = 1553 ⋅3541.

It can be written as a sum of positive squares in 2 ways, for example, as 537289 + 3182656 = 733^2 + 1784^2 .

It is a cyclic number.

It is not a de Polignac number, because 3719945 - 2¹⁸ = 3457801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3719899 and 3719908.

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, 371990 + ... + 371999.

It is an arithmetic number, because the mean of its divisors is an integer number (1115985).

Almost surely, 2^3719945 is an apocalyptic number.

It is an amenable number.

3719945 is a deficient number, since it is larger than the sum of its proper divisors (743995).

3719945 is an equidigital number, since it uses as much as digits as its factorization.

3719945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743994.

The product of its digits is 34020, while the sum is 38.

The square root of 3719945 is about 1928.7158940601. The cubic root of 3719945 is about 154.9454542723.

It can be divided in two parts, 3719 and 945, that added together give a palindrome (4664).

The spelling of 3719945 in words is "three million, seven hundred nineteen thousand, nine hundred forty-five".