69381139 has 2 divisors, whose sum is σ = 69381140. Its totient is φ = 69381138.

The previous prime is 69381127. The next prime is 69381157. The reversal of 69381139 is 93118396.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69381139 - 2¹⁵ = 69348371 is a prime.

It is not a weakly prime, because it can be changed into another prime (69381239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34690569 + 34690570.

It is an arithmetic number, because the mean of its divisors is an integer number (34690570).

Almost surely, 2^69381139 is an apocalyptic number.

69381139 is a deficient number, since it is larger than the sum of its proper divisors (1).

69381139 is an equidigital number, since it uses as much as digits as its factorization.

69381139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 40.

The square root of 69381139 is about 8329.5341406348. The cubic root of 69381139 is about 410.9104080285.

The spelling of 69381139 in words is "sixty-nine million, three hundred eighty-one thousand, one hundred thirty-nine".