388164949 has 4 divisors (see below), whose sum is σ = 388449036. Its totient is φ = 387880864.

The previous prime is 388164941. The next prime is 388165007. The reversal of 388164949 is 949461883.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 949461883 = 17 ⋅55850699.

It can be written as a sum of positive squares in 2 ways, for example, as 341584324 + 46580625 = 18482^2 + 6825^2 .

It is a cyclic number.

It is not a de Polignac number, because 388164949 - 2³ = 388164941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 388164896 and 388164905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388164941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139984 + ... + 142729.

It is an arithmetic number, because the mean of its divisors is an integer number (97112259).

Almost surely, 2^388164949 is an apocalyptic number.

It is an amenable number.

388164949 is a deficient number, since it is larger than the sum of its proper divisors (284087).

388164949 is a wasteful number, since it uses less digits than its factorization.

388164949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284086.

The product of its digits is 1492992, while the sum is 52.

The square root of 388164949 is about 19701.9021670498. The cubic root of 388164949 is about 729.4666455051.

The spelling of 388164949 in words is "three hundred eighty-eight million, one hundred sixty-four thousand, nine hundred forty-nine".