69994921 has 2 divisors, whose sum is σ = 69994922. Its totient is φ = 69994920.

The previous prime is 69994889. The next prime is 69994943. The reversal of 69994921 is 12949996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51194025 + 18800896 = 7155^2 + 4336^2 .

It is a cyclic number.

It is not a de Polignac number, because 69994921 - 2⁵ = 69994889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (69994961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34997460 + 34997461.

It is an arithmetic number, because the mean of its divisors is an integer number (34997461).

Almost surely, 2^69994921 is an apocalyptic number.

It is an amenable number.

69994921 is a deficient number, since it is larger than the sum of its proper divisors (1).

69994921 is an equidigital number, since it uses as much as digits as its factorization.

69994921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 49.

The square root of 69994921 is about 8366.2967315294. The cubic root of 69994921 is about 412.1185621169.

The spelling of 69994921 in words is "sixty-nine million, nine hundred ninety-four thousand, nine hundred twenty-one".