3948545 has 4 divisors (see below), whose sum is σ = 4738260. Its totient is φ = 3158832.

The previous prime is 3948541. The next prime is 3948547. The reversal of 3948545 is 5458493.

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: 5458493 = 449 ⋅12157.

It can be written as a sum of positive squares in 2 ways, for example, as 595984 + 3352561 = 772^2 + 1831^2 .

It is a cyclic number.

It is not a de Polignac number, because 3948545 - 2² = 3948541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3948499 and 3948508.

It is not an unprimeable number, because it can be changed into a prime (3948541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394850 + ... + 394859.

It is an arithmetic number, because the mean of its divisors is an integer number (1184565).

It is a Proth number, since it is equal to 241 ⋅ 2¹⁴ + 1 and 241 < 2¹⁴.

Almost surely, 2^3948545 is an apocalyptic number.

It is an amenable number.

3948545 is a deficient number, since it is larger than the sum of its proper divisors (789715).

3948545 is an equidigital number, since it uses as much as digits as its factorization.

3948545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789714.

The product of its digits is 86400, while the sum is 38.

The square root of 3948545 is about 1987.0946127449. The cubic root of 3948545 is about 158.0565011834.

It can be divided in two parts, 39 and 48545, that added together give a palindrome (48584).

The spelling of 3948545 in words is "three million, nine hundred forty-eight thousand, five hundred forty-five".