398857853559149 has 8 divisors (see below), whose sum is σ = 402980576156640. Its totient is φ = 394742447241616.

The previous prime is 398857853559107. The next prime is 398857853559169. The reversal of 398857853559149 is 941955358758893.

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 398857853559149 - 2⁴⁰ = 397758341931373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398857853559169) 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, 1828960394 + ... + 1829178459.

It is an arithmetic number, because the mean of its divisors is an integer number (50372572019580).

Almost surely, 2^{398857853559149} is an apocalyptic number.

It is an amenable number.

398857853559149 is a deficient number, since it is larger than the sum of its proper divisors (4122722597491).

398857853559149 is a wasteful number, since it uses less digits than its factorization.

398857853559149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658139979.

The product of its digits is 58786560000, while the sum is 89.

The spelling of 398857853559149 in words is "three hundred ninety-eight trillion, eight hundred fifty-seven billion, eight hundred fifty-three million, five hundred fifty-nine thousand, one hundred forty-nine".