3945492 has 18 divisors (see below), whose sum is σ = 9973418. Its totient is φ = 1315152.

The previous prime is 3945467. The next prime is 3945527. The reversal of 3945492 is 2945493.

It can be written as a sum of positive squares in only one way, i.e., 3944196 + 1296 = 1986^2 + 36^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 109597 = 3945492 / (3 + 9 + 4 + 5 + 4 + 9 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54763 + ... + 54834.

Almost surely, 2^3945492 is an apocalyptic number.

It is an amenable number.

3945492 is an abundant number, since it is smaller than the sum of its proper divisors (6027926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3945492 is a wasteful number, since it uses less digits than its factorization.

3945492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109607 (or 109602 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 3945492 is about 1986.3262571894. The cubic root of 3945492 is about 158.0157544510.

Subtracting from 3945492 its reverse (2945493), we obtain a palindrome (999999).

It can be divided in two parts, 394 and 5492, that added together give a triangular number (5886 = T₁₀₈).

The spelling of 3945492 in words is "three million, nine hundred forty-five thousand, four hundred ninety-two".