269401421 has 4 divisors (see below), whose sum is σ = 270080412. Its totient is φ = 268722432.

The previous prime is 269401393. The next prime is 269401423. The reversal of 269401421 is 124104962.

269401421 = 139² + 140² + ... + 932².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 139122025 + 130279396 = 11795^2 + 11414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-269401421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (269401423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338900 + ... + 339693.

It is an arithmetic number, because the mean of its divisors is an integer number (67520103).

Almost surely, 2^269401421 is an apocalyptic number.

It is an amenable number.

269401421 is a deficient number, since it is larger than the sum of its proper divisors (678991).

269401421 is an equidigital number, since it uses as much as digits as its factorization.

269401421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678990.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 269401421 is about 16413.4524399957. The cubic root of 269401421 is about 645.8524242191.

The spelling of 269401421 in words is "two hundred sixty-nine million, four hundred one thousand, four hundred twenty-one".