73969447 has 2 divisors, whose sum is σ = 73969448. Its totient is φ = 73969446.

The previous prime is 73969381. The next prime is 73969463. The reversal of 73969447 is 74496937.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73969447 - 2⁷ = 73969319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73969447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73969547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36984723 + 36984724.

It is an arithmetic number, because the mean of its divisors is an integer number (36984724).

Almost surely, 2^73969447 is an apocalyptic number.

73969447 is a deficient number, since it is larger than the sum of its proper divisors (1).

73969447 is an equidigital number, since it uses as much as digits as its factorization.

73969447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 49.

The square root of 73969447 is about 8600.5492266483. The cubic root of 73969447 is about 419.7758573487.

The spelling of 73969447 in words is "seventy-three million, nine hundred sixty-nine thousand, four hundred forty-seven".