69948239 has 2 divisors, whose sum is σ = 69948240. Its totient is φ = 69948238.

The previous prime is 69948233. The next prime is 69948247. The reversal of 69948239 is 93284996.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69948239 - 2⁴ = 69948223 is a prime.

It is a super-2 number, since 2×69948239² = 9785512278402242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69948233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34974119 + 34974120.

It is an arithmetic number, because the mean of its divisors is an integer number (34974120).

Almost surely, 2^69948239 is an apocalyptic number.

69948239 is a deficient number, since it is larger than the sum of its proper divisors (1).

69948239 is an equidigital number, since it uses as much as digits as its factorization.

69948239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 50.

The square root of 69948239 is about 8363.5063818951. The cubic root of 69948239 is about 412.0269231000.

The spelling of 69948239 in words is "sixty-nine million, nine hundred forty-eight thousand, two hundred thirty-nine".