38861439 has 16 divisors (see below), whose sum is σ = 54996480. Its totient is φ = 24324480.

The previous prime is 38861423. The next prime is 38861497. The reversal of 38861439 is 93416883.

It is a happy number.

It is not a de Polignac number, because 38861439 - 2⁴ = 38861423 is a prime.

It is a super-2 number, since 2×38861439² = 3020422882301442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38861439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38861419) 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, 30954 + ... + 32184.

It is an arithmetic number, because the mean of its divisors is an integer number (3437280).

Almost surely, 2^38861439 is an apocalyptic number.

38861439 is a deficient number, since it is larger than the sum of its proper divisors (16135041).

38861439 is a wasteful number, since it uses less digits than its factorization.

38861439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870.

The product of its digits is 124416, while the sum is 42.

The square root of 38861439 is about 6233.8943686912. The cubic root of 38861439 is about 338.7190526505.

The spelling of 38861439 in words is "thirty-eight million, eight hundred sixty-one thousand, four hundred thirty-nine".