3649431 has 8 divisors (see below), whose sum is σ = 4916464. Its totient is φ = 2407680.

The previous prime is 3649417. The next prime is 3649469. The reversal of 3649431 is 1349463.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3649431 - 2⁹ = 3648919 is a prime.

It is a super-2 number, since 2×3649431² = 26636693247522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5980 + ... + 6561.

It is an arithmetic number, because the mean of its divisors is an integer number (614558).

Almost surely, 2^3649431 is an apocalyptic number.

3649431 is a deficient number, since it is larger than the sum of its proper divisors (1267033).

3649431 is a wasteful number, since it uses less digits than its factorization.

3649431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12641.

The product of its digits is 7776, while the sum is 30.

The square root of 3649431 is about 1910.3483975443. The cubic root of 3649431 is about 153.9601712934.

Subtracting from 3649431 its reverse (1349463), we obtain a cube (2299968 = 132³).

The spelling of 3649431 in words is "three million, six hundred forty-nine thousand, four hundred thirty-one".