69138893 has 4 divisors (see below), whose sum is σ = 69161148. Its totient is φ = 69116640.

The previous prime is 69138887. The next prime is 69138899. The reversal of 69138893 is 39883196.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (69138887) and next prime (69138899).

It can be written as a sum of positive squares in 2 ways, for example, as 58400164 + 10738729 = 7642^2 + 3277^2 .

It is a cyclic number.

It is not a de Polignac number, because 69138893 - 2¹⁰ = 69137869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69138899) 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, 5528 + ... + 12993.

It is an arithmetic number, because the mean of its divisors is an integer number (17290287).

Almost surely, 2^69138893 is an apocalyptic number.

It is an amenable number.

69138893 is a deficient number, since it is larger than the sum of its proper divisors (22255).

69138893 is a wasteful number, since it uses less digits than its factorization.

69138893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22254.

The product of its digits is 279936, while the sum is 47.

The square root of 69138893 is about 8314.9800360554. The cubic root of 69138893 is about 410.4316156659.

The spelling of 69138893 in words is "sixty-nine million, one hundred thirty-eight thousand, eight hundred ninety-three".