1388061299 has 4 divisors (see below), whose sum is σ = 1390527336. Its totient is φ = 1385595264.

The previous prime is 1388061221. The next prime is 1388061313. The reversal of 1388061299 is 9921608831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9921608831 = 23 ⋅431374297.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1388061299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1388061599) 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, 1232174 + ... + 1233299.

It is an arithmetic number, because the mean of its divisors is an integer number (347631834).

Almost surely, 2^1388061299 is an apocalyptic number.

1388061299 is a deficient number, since it is larger than the sum of its proper divisors (2466037).

1388061299 is an equidigital number, since it uses as much as digits as its factorization.

1388061299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466036.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 1388061299 is about 37256.6946869955. The cubic root of 1388061299 is about 1115.4999330636.

The spelling of 1388061299 in words is "one billion, three hundred eighty-eight million, sixty-one thousand, two hundred ninety-nine".