5388949221 has 16 divisors (see below), whose sum is σ = 7632413568. Its totient is φ = 3370419200.

The previous prime is 5388949207. The next prime is 5388949277. The reversal of 5388949221 is 1229498835.

It is a cyclic number.

It is not a de Polignac number, because 5388949221 - 2¹⁴ = 5388932837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5388949921) 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, 154020 + ... + 185741.

It is an arithmetic number, because the mean of its divisors is an integer number (477025848).

Almost surely, 2^5388949221 is an apocalyptic number.

5388949221 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5388949221 is a deficient number, since it is larger than the sum of its proper divisors (2243464347).

5388949221 is a wasteful number, since it uses less digits than its factorization.

5388949221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340092.

The product of its digits is 1244160, while the sum is 51.

The square root of 5388949221 is about 73409.4627483406. The cubic root of 5388949221 is about 1753.2130599314.

The spelling of 5388949221 in words is "five billion, three hundred eighty-eight million, nine hundred forty-nine thousand, two hundred twenty-one".