398146093 has 8 divisors (see below), whose sum is σ = 405609120. Its totient is φ = 390727920.

The previous prime is 398146087. The next prime is 398146109. The reversal of 398146093 is 390641893.

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

It is not a de Polignac number, because 398146093 - 2²¹ = 396048941 is a prime.

It is a super-2 number, since 2×398146093² = 317040622742329298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398146003) 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, 6978 + ... + 29068.

It is an arithmetic number, because the mean of its divisors is an integer number (50701140).

Almost surely, 2^398146093 is an apocalyptic number.

It is an amenable number.

398146093 is a deficient number, since it is larger than the sum of its proper divisors (7463027).

398146093 is a wasteful number, since it uses less digits than its factorization.

398146093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22427.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 398146093 is about 19953.5984975142. The cubic root of 398146093 is about 735.6662279567. Note that the first 3 decimals are identical.

The spelling of 398146093 in words is "three hundred ninety-eight million, one hundred forty-six thousand, ninety-three".