1388798414 has 8 divisors (see below), whose sum is σ = 2084815128. Its totient is φ = 693860040.

The previous prime is 1388798401. The next prime is 1388798423. The reversal of 1388798414 is 4148978831.

It is a happy number.

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

It is a super-2 number, since 2×1388798414² = 3857522069457830792, which contains 22 as substring.

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, 266357 + ... + 271520.

It is an arithmetic number, because the mean of its divisors is an integer number (260601891).

Almost surely, 2^1388798414 is an apocalyptic number.

1388798414 is a deficient number, since it is larger than the sum of its proper divisors (696016714).

1388798414 is a wasteful number, since it uses less digits than its factorization.

1388798414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539170.

The product of its digits is 1548288, while the sum is 53.

The square root of 1388798414 is about 37266.5857572169. The cubic root of 1388798414 is about 1115.6973561955.

The spelling of 1388798414 in words is "one billion, three hundred eighty-eight million, seven hundred ninety-eight thousand, four hundred fourteen".