39893139 has 48 divisors (see below), whose sum is σ = 68490240. Its totient is φ = 22057920.

The previous prime is 39893129. The next prime is 39893149. The reversal of 39893139 is 93139893.

It is an interprime number because it is at equal distance from previous prime (39893129) and next prime (39893149).

It is not a de Polignac number, because 39893139 - 2⁷ = 39893011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39893094 and 39893103.

It is not an unprimeable number, because it can be changed into a prime (39893129) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 178782 + ... + 179004.

It is an arithmetic number, because the mean of its divisors is an integer number (1426880).

Almost surely, 2^39893139 is an apocalyptic number.

39893139 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

39893139 is a deficient number, since it is larger than the sum of its proper divisors (28597101).

39893139 is a wasteful number, since it uses less digits than its factorization.

39893139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 389 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 39893139 is about 6316.1015666311. The cubic root of 39893139 is about 341.6903681621.

The spelling of 39893139 in words is "thirty-nine million, eight hundred ninety-three thousand, one hundred thirty-nine".