1398476357 has 2 divisors, whose sum is σ = 1398476358. Its totient is φ = 1398476356.

The previous prime is 1398476347. The next prime is 1398476381. The reversal of 1398476357 is 7536748931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1332688036 + 65788321 = 36506^2 + 8111^2 .

It is a cyclic number.

It is not a de Polignac number, because 1398476357 - 2⁴ = 1398476341 is a prime.

It is a super-2 number, since 2×1398476357² = 3911472242175982898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1398476299 and 1398476308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1398476347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699238178 + 699238179.

It is an arithmetic number, because the mean of its divisors is an integer number (699238179).

Almost surely, 2^1398476357 is an apocalyptic number.

It is an amenable number.

1398476357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398476357 is an equidigital number, since it uses as much as digits as its factorization.

1398476357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 53.

The square root of 1398476357 is about 37396.2077890259. The cubic root of 1398476357 is about 1118.2829655841.

The spelling of 1398476357 in words is "one billion, three hundred ninety-eight million, four hundred seventy-six thousand, three hundred fifty-seven".