38949790 has 32 divisors (see below), whose sum is σ = 76793184. Its totient is φ = 14106240.

The previous prime is 38949769. The next prime is 38949797. The reversal of 38949790 is 9794983.

38949790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×38949790² = 3034172282088200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38949797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34312 + ... + 35428.

It is an arithmetic number, because the mean of its divisors is an integer number (2399787).

Almost surely, 2^38949790 is an apocalyptic number.

38949790 is a deficient number, since it is larger than the sum of its proper divisors (37843394).

38949790 is a wasteful number, since it uses less digits than its factorization.

38949790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 38949790 is about 6240.9766863849. The cubic root of 38949790 is about 338.9755495573.

The spelling of 38949790 in words is "thirty-eight million, nine hundred forty-nine thousand, seven hundred ninety".