398471770 has 8 divisors (see below), whose sum is σ = 717249204. Its totient is φ = 159388704.

The previous prime is 398471767. The next prime is 398471783. The reversal of 398471770 is 77174893.

It can be written as a sum of positive squares in 2 ways, for example, as 320732281 + 77739489 = 17909^2 + 8817^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 398471770.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19923579 + ... + 19923598.

Almost surely, 2^398471770 is an apocalyptic number.

398471770 is a deficient number, since it is larger than the sum of its proper divisors (318777434).

398471770 is a wasteful number, since it uses less digits than its factorization.

398471770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39847184.

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 398471770 is about 19961.7576881396. The cubic root of 398471770 is about 735.8667609413.

The spelling of 398471770 in words is "three hundred ninety-eight million, four hundred seventy-one thousand, seven hundred seventy".