38949340 has 12 divisors (see below), whose sum is σ = 81793656. Its totient is φ = 15579728.

The previous prime is 38949331. The next prime is 38949353. The reversal of 38949340 is 4394983.

It is a junction number, because it is equal to n+sod(n) for n = 38949293 and 38949302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 973714 + ... + 973753.

It is an arithmetic number, because the mean of its divisors is an integer number (6816138).

Almost surely, 2^38949340 is an apocalyptic number.

It is an amenable number.

38949340 is an abundant number, since it is smaller than the sum of its proper divisors (42844316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38949340 is a wasteful number, since it uses less digits than its factorization.

38949340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947476 (or 1947474 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 38949340 is about 6240.9406342313. The cubic root of 38949340 is about 338.9742441195.

It can be divided in two parts, 389 and 49340, that added together give a square (49729 = 223²).

The spelling of 38949340 in words is "thirty-eight million, nine hundred forty-nine thousand, three hundred forty".