1399473357 has 8 divisors (see below), whose sum is σ = 1876274400. Its totient is φ = 927827280.

The previous prime is 1399473319. The next prime is 1399473359. The reversal of 1399473357 is 7533749931.

It is a happy number.

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

It is not a de Polignac number, because 1399473357 - 2¹⁸ = 1399211213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399473359) 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, 1288107 + ... + 1289192.

It is an arithmetic number, because the mean of its divisors is an integer number (234534300).

Almost surely, 2^1399473357 is an apocalyptic number.

It is an amenable number.

1399473357 is a deficient number, since it is larger than the sum of its proper divisors (476801043).

1399473357 is a wasteful number, since it uses less digits than its factorization.

1399473357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577483.

The product of its digits is 2143260, while the sum is 51.

The square root of 1399473357 is about 37409.5356426674. The cubic root of 1399473357 is about 1118.5486507504.

The spelling of 1399473357 in words is "one billion, three hundred ninety-nine million, four hundred seventy-three thousand, three hundred fifty-seven".