1388627229 has 8 divisors (see below), whose sum is σ = 2019821472. Its totient is φ = 841592240.

The previous prime is 1388627197. The next prime is 1388627297. The reversal of 1388627229 is 9227268831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1388627229 - 2⁵ = 1388627197 is a prime.

It is a super-2 number, since 2×1388627229² = 3856571162240436882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388627629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21039774 + ... + 21039839.

It is an arithmetic number, because the mean of its divisors is an integer number (252477684).

Almost surely, 2^1388627229 is an apocalyptic number.

It is an amenable number.

1388627229 is a deficient number, since it is larger than the sum of its proper divisors (631194243).

1388627229 is a wasteful number, since it uses less digits than its factorization.

1388627229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42079627.

The product of its digits is 580608, while the sum is 48.

The square root of 1388627229 is about 37264.2889238477. The cubic root of 1388627229 is about 1115.6515135693.

The spelling of 1388627229 in words is "one billion, three hundred eighty-eight million, six hundred twenty-seven thousand, two hundred twenty-nine".