3955431 has 4 divisors (see below), whose sum is σ = 5273912. Its totient is φ = 2636952.

The previous prime is 3955429. The next prime is 3955433. The reversal of 3955431 is 1345593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1345593 = 3 ⋅448531.

It is an interprime number because it is at equal distance from previous prime (3955429) and next prime (3955433).

It is not a de Polignac number, because 3955431 - 2¹ = 3955429 is a prime.

It is a super-2 number, since 2×3955431² = 31290868791522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3955433) 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, 659236 + ... + 659241.

It is an arithmetic number, because the mean of its divisors is an integer number (1318478).

Almost surely, 2^3955431 is an apocalyptic number.

3955431 is a deficient number, since it is larger than the sum of its proper divisors (1318481).

3955431 is a wasteful number, since it uses less digits than its factorization.

3955431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318480.

The product of its digits is 8100, while the sum is 30.

The square root of 3955431 is about 1988.8265384392. The cubic root of 3955431 is about 158.1483278347.

The spelling of 3955431 in words is "three million, nine hundred fifty-five thousand, four hundred thirty-one".