1401240469 has 4 divisors (see below), whose sum is σ = 1431054144. Its totient is φ = 1371426796.

The previous prime is 1401240439. The next prime is 1401240493. The reversal of 1401240469 is 9640421041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9640421041 = 503 ⋅19165847.

It is a cyclic number.

It is not a de Polignac number, because 1401240469 - 2⁵ = 1401240437 is a prime.

It is a super-2 number, since 2×1401240469² = 3926949703926679922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1401240469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401240439) 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, 14906767 + ... + 14906860.

It is an arithmetic number, because the mean of its divisors is an integer number (357763536).

Almost surely, 2^1401240469 is an apocalyptic number.

It is an amenable number.

1401240469 is a deficient number, since it is larger than the sum of its proper divisors (29813675).

1401240469 is an equidigital number, since it uses as much as digits as its factorization.

1401240469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29813674.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1401240469 is about 37433.1466617489. The cubic root of 1401240469 is about 1119.0192490572.

The spelling of 1401240469 in words is "one billion, four hundred one million, two hundred forty thousand, four hundred sixty-nine".