43139996 has 12 divisors (see below), whose sum is σ = 78777552. Its totient is φ = 20632128.

The previous prime is 43139983. The next prime is 43140001. The reversal of 43139996 is 69993134.

It is a super-2 number, since 2×43139996² = 3722118509760032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234365 + ... + 234548.

It is an arithmetic number, because the mean of its divisors is an integer number (6564796).

Almost surely, 2^43139996 is an apocalyptic number.

43139996 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

43139996 is a deficient number, since it is larger than the sum of its proper divisors (35637556).

43139996 is a wasteful number, since it uses less digits than its factorization.

43139996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468940 (or 468938 counting only the distinct ones).

The product of its digits is 157464, while the sum is 44.

The square root of 43139996 is about 6568.1044449674. The cubic root of 43139996 is about 350.7195970516.

The spelling of 43139996 in words is "forty-three million, one hundred thirty-nine thousand, nine hundred ninety-six".