3642949 has 4 divisors (see below), whose sum is σ = 3649036. Its totient is φ = 3636864.

The previous prime is 3642941. The next prime is 3642959. The reversal of 3642949 is 9492463.

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 986049 + 2656900 = 993^2 + 1630^2 .

It is a cyclic number.

It is not a de Polignac number, because 3642949 - 2³ = 3642941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3642941) 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, 2034 + ... + 3379.

It is an arithmetic number, because the mean of its divisors is an integer number (912259).

Almost surely, 2^3642949 is an apocalyptic number.

It is an amenable number.

3642949 is a deficient number, since it is larger than the sum of its proper divisors (6087).

3642949 is an equidigital number, since it uses as much as digits as its factorization.

3642949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6086.

The product of its digits is 46656, while the sum is 37.

The square root of 3642949 is about 1908.6510943596. The cubic root of 3642949 is about 153.8689642652.

The spelling of 3642949 in words is "three million, six hundred forty-two thousand, nine hundred forty-nine".