3929431 has 8 divisors (see below), whose sum is σ = 4539024. Its totient is φ = 3361920.

The previous prime is 3929417. The next prime is 3929449. The reversal of 3929431 is 1349293.

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

It is not a de Polignac number, because 3929431 - 2²¹ = 1832279 is a prime.

It is a super-2 number, since 2×3929431² = 30880855967522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3929393 and 3929402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3929461) 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, 10320 + ... + 10693.

It is an arithmetic number, because the mean of its divisors is an integer number (567378).

Almost surely, 2^3929431 is an apocalyptic number.

3929431 is a deficient number, since it is larger than the sum of its proper divisors (609593).

3929431 is a wasteful number, since it uses less digits than its factorization.

3929431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21041.

The product of its digits is 5832, while the sum is 31.

The square root of 3929431 is about 1982.2792436990. The cubic root of 3929431 is about 157.8010501316.

The spelling of 3929431 in words is "three million, nine hundred twenty-nine thousand, four hundred thirty-one".