1388061 has 6 divisors (see below), whose sum is σ = 2004990. Its totient is φ = 925368.

The previous prime is 1388059. The next prime is 1388063. The reversal of 1388061 is 1608831.

It is an interprime number because it is at equal distance from previous prime (1388059) and next prime (1388063).

It can be written as a sum of positive squares in only one way, i.e., 1279161 + 108900 = 1131^2 + 330^2 .

It is not a de Polignac number, because 1388061 - 2¹ = 1388059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77106 + ... + 77123.

It is an arithmetic number, because the mean of its divisors is an integer number (334165).

2^1388061 is an apocalyptic number.

It is an amenable number.

1388061 is a deficient number, since it is larger than the sum of its proper divisors (616929).

1388061 is a wasteful number, since it uses less digits than its factorization.

1388061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154235 (or 154232 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1388061 is about 1178.1600061112. The cubic root of 1388061 is about 111.5499852968.

The spelling of 1388061 in words is "one million, three hundred eighty-eight thousand, sixty-one".