401970269 has 2 divisors, whose sum is σ = 401970270. Its totient is φ = 401970268.

The previous prime is 401970227. The next prime is 401970277. The reversal of 401970269 is 962079104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209815225 + 192155044 = 14485^2 + 13862^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401970269 is a prime.

It is a super-2 number, since 2×401970269² = 323160194319864722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401970209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200985134 + 200985135.

It is an arithmetic number, because the mean of its divisors is an integer number (200985135).

Almost surely, 2^401970269 is an apocalyptic number.

It is an amenable number.

401970269 is a deficient number, since it is larger than the sum of its proper divisors (1).

401970269 is an equidigital number, since it uses as much as digits as its factorization.

401970269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 401970269 is about 20049.1962183026. The cubic root of 401970269 is about 738.0140743687.

The spelling of 401970269 in words is "four hundred one million, nine hundred seventy thousand, two hundred sixty-nine".