69840401 has 2 divisors, whose sum is σ = 69840402. Its totient is φ = 69840400.

The previous prime is 69840373. The next prime is 69840451. The reversal of 69840401 is 10404896.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63984001 + 5856400 = 7999^2 + 2420^2 .

It is a cyclic number.

It is not a de Polignac number, because 69840401 - 2¹⁴ = 69824017 is a prime.

It is a super-2 number, since 2×69840401² = 9755363223681602, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (69840451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34920200 + 34920201.

It is an arithmetic number, because the mean of its divisors is an integer number (34920201).

Almost surely, 2^69840401 is an apocalyptic number.

It is an amenable number.

69840401 is a deficient number, since it is larger than the sum of its proper divisors (1).

69840401 is an equidigital number, since it uses as much as digits as its factorization.

69840401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 69840401 is about 8357.0569580445. The cubic root of 69840401 is about 411.8150759162.

The spelling of 69840401 in words is "sixty-nine million, eight hundred forty thousand, four hundred one".