1398240469 has 8 divisors (see below), whose sum is σ = 1423908000. Its totient is φ = 1372638672.

The previous prime is 1398240451. The next prime is 1398240479. The reversal of 1398240469 is 9640428931.

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

It is a cyclic number.

It is not a de Polignac number, because 1398240469 - 2⁹ = 1398239957 is a prime.

It is a super-2 number, since 2×1398240469² = 3910152818298679922, 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 (1398240439) 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, 27567 + ... + 59635.

It is an arithmetic number, because the mean of its divisors is an integer number (177988500).

Almost surely, 2^1398240469 is an apocalyptic number.

It is an amenable number.

1398240469 is a deficient number, since it is larger than the sum of its proper divisors (25667531).

1398240469 is an equidigital number, since it uses as much as digits as its factorization.

1398240469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32867.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 1398240469 is about 37393.0537533377. The cubic root of 1398240469 is about 1118.2200865887.

The spelling of 1398240469 in words is "one billion, three hundred ninety-eight million, two hundred forty thousand, four hundred sixty-nine".