401971269 has 8 divisors (see below), whose sum is σ = 612527680. Its totient is φ = 229697856.

The previous prime is 401971249. The next prime is 401971279. The reversal of 401971269 is 962179104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 401971269 - 2¹⁶ = 401905733 is a prime.

It is a super-2 number, since 2×401971269² = 323161802202940722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401971249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9570724 + ... + 9570765.

It is an arithmetic number, because the mean of its divisors is an integer number (76565960).

Almost surely, 2^401971269 is an apocalyptic number.

It is an amenable number.

401971269 is a deficient number, since it is larger than the sum of its proper divisors (210556411).

401971269 is a wasteful number, since it uses less digits than its factorization.

401971269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19141499.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 401971269 is about 20049.2211569427. The cubic root of 401971269 is about 738.0146863654.

It can be divided in two parts, 4019712 and 69, that multiplied together give a triangular number (277360128 = T₂₃₅₅₂).

The spelling of 401971269 in words is "four hundred one million, nine hundred seventy-one thousand, two hundred sixty-nine".