3631429 has 4 divisors (see below), whose sum is σ = 3635500. Its totient is φ = 3627360.

The previous prime is 3631427. The next prime is 3631457. The reversal of 3631429 is 9241363.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9241363 = 2411 ⋅3833.

It can be written as a sum of positive squares in 2 ways, for example, as 1954404 + 1677025 = 1398^2 + 1295^2 .

It is a cyclic number.

It is not a de Polignac number, because 3631429 - 2¹ = 3631427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3631397 and 3631406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3631423) 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, 54 + ... + 2695.

It is an arithmetic number, because the mean of its divisors is an integer number (908875).

Almost surely, 2^3631429 is an apocalyptic number.

It is an amenable number.

3631429 is a deficient number, since it is larger than the sum of its proper divisors (4071).

3631429 is a wasteful number, since it uses less digits than its factorization.

3631429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070.

The product of its digits is 3888, while the sum is 28.

The square root of 3631429 is about 1905.6308666686. The cubic root of 3631429 is about 153.7066010984.

The spelling of 3631429 in words is "three million, six hundred thirty-one thousand, four hundred twenty-nine".