1398376497 has 96 divisors (see below), whose sum is σ = 2431636480. Its totient is φ = 697973760.

The previous prime is 1398376493. The next prime is 1398376519. The reversal of 1398376497 is 7946738931.

It is not a de Polignac number, because 1398376497 - 2² = 1398376493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

Its product of digits (6858432) is a multiple of the sum of its prime divisors (294).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398376493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7725747 + ... + 7725927.

Almost surely, 2^1398376497 is an apocalyptic number.

1398376497 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1398376497 is a deficient number, since it is larger than the sum of its proper divisors (1033259983).

1398376497 is a wasteful number, since it uses less digits than its factorization.

1398376497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 294 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 57.

The square root of 1398376497 is about 37394.8726030722. The cubic root of 1398376497 is about 1118.2563474735.

The spelling of 1398376497 in words is "one billion, three hundred ninety-eight million, three hundred seventy-six thousand, four hundred ninety-seven".