3955631 has 4 divisors (see below), whose sum is σ = 4083264. Its totient is φ = 3828000.

The previous prime is 3955621. The next prime is 3955643. The reversal of 3955631 is 1365593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1365593 = 17 ⋅80329.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3955631 is a prime.

It is a super-2 number, since 2×3955631² = 31294033216322, 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 (3955621) 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, 63770 + ... + 63831.

It is an arithmetic number, because the mean of its divisors is an integer number (1020816).

Almost surely, 2^3955631 is an apocalyptic number.

3955631 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3955631 is a deficient number, since it is larger than the sum of its proper divisors (127633).

3955631 is a wasteful number, since it uses less digits than its factorization.

3955631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127632.

The product of its digits is 12150, while the sum is 32.

The square root of 3955631 is about 1988.8768187095. The cubic root of 3955631 is about 158.1509932949.

The spelling of 3955631 in words is "three million, nine hundred fifty-five thousand, six hundred thirty-one".