69199421 has 2 divisors, whose sum is σ = 69199422. Its totient is φ = 69199420.

The previous prime is 69199411. The next prime is 69199439. The reversal of 69199421 is 12499196.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67732900 + 1466521 = 8230^2 + 1211^2 .

It is a cyclic number.

It is not a de Polignac number, because 69199421 - 2⁶ = 69199357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69199411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34599710 + 34599711.

It is an arithmetic number, because the mean of its divisors is an integer number (34599711).

Almost surely, 2^69199421 is an apocalyptic number.

It is an amenable number.

69199421 is a deficient number, since it is larger than the sum of its proper divisors (1).

69199421 is an equidigital number, since it uses as much as digits as its factorization.

69199421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 41.

The square root of 69199421 is about 8318.6189358571. The cubic root of 69199421 is about 410.5513522221.

The spelling of 69199421 in words is "sixty-nine million, one hundred ninety-nine thousand, four hundred twenty-one".