69472279 has 2 divisors, whose sum is σ = 69472280. Its totient is φ = 69472278.

The previous prime is 69472261. The next prime is 69472297. The reversal of 69472279 is 97227496.

It is a happy number.

Together with next prime (69472297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (69472261) and next prime (69472297).

It is a cyclic number.

It is not a de Polignac number, because 69472279 - 2¹⁵ = 69439511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69472979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34736139 + 34736140.

It is an arithmetic number, because the mean of its divisors is an integer number (34736140).

Almost surely, 2^69472279 is an apocalyptic number.

69472279 is a deficient number, since it is larger than the sum of its proper divisors (1).

69472279 is an equidigital number, since it uses as much as digits as its factorization.

69472279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 46.

The square root of 69472279 is about 8335.0032393515. The cubic root of 69472279 is about 411.0902551198.

It can be divided in two parts, 69472 and 279, that added together give a triangular number (69751 = T₃₇₃).

The spelling of 69472279 in words is "sixty-nine million, four hundred seventy-two thousand, two hundred seventy-nine".