1397498833 has 4 divisors (see below), whose sum is σ = 1397749248. Its totient is φ = 1397248420.

The previous prime is 1397498831. The next prime is 1397498857. The reversal of 1397498833 is 3388947931.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 1397498833 - 2¹ = 1397498831 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1397498831) 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, 116641 + ... + 128062.

It is an arithmetic number, because the mean of its divisors is an integer number (349437312).

Almost surely, 2^1397498833 is an apocalyptic number.

It is an amenable number.

1397498833 is a deficient number, since it is larger than the sum of its proper divisors (250415).

1397498833 is an equidigital number, since it uses as much as digits as its factorization.

1397498833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250414.

The product of its digits is 3919104, while the sum is 55.

The square root of 1397498833 is about 37383.1356763983. The cubic root of 1397498833 is about 1118.0223478454.

The spelling of 1397498833 in words is "one billion, three hundred ninety-seven million, four hundred ninety-eight thousand, eight hundred thirty-three".