6429381 has 16 divisors (see below), whose sum is σ = 9850368. Its totient is φ = 3654000.

The previous prime is 6429373. The next prime is 6429389. The reversal of 6429381 is 1839246.

It is an interprime number because it is at equal distance from previous prime (6429373) and next prime (6429389).

It is not a de Polignac number, because 6429381 - 2³ = 6429373 is a prime.

It is a super-2 number, since 2×6429381² = 82673880086322, which contains 22 as substring.

6429381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6429389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3706 + ... + 5156.

It is an arithmetic number, because the mean of its divisors is an integer number (615648).

Almost surely, 2^6429381 is an apocalyptic number.

It is an amenable number.

6429381 is a deficient number, since it is larger than the sum of its proper divisors (3420987).

6429381 is a wasteful number, since it uses less digits than its factorization.

6429381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672.

The product of its digits is 10368, while the sum is 33.

The square root of 6429381 is about 2535.6224087983. The cubic root of 6429381 is about 185.9472332687.

The spelling of 6429381 in words is "six million, four hundred twenty-nine thousand, three hundred eighty-one".