398454730 has 16 divisors (see below), whose sum is σ = 729375840. Its totient is φ = 156680272.

The previous prime is 398454703. The next prime is 398454743. The reversal of 398454730 is 37454893.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337084 + ... + 338263.

It is an arithmetic number, because the mean of its divisors is an integer number (45585990).

Almost surely, 2^398454730 is an apocalyptic number.

398454730 is a deficient number, since it is larger than the sum of its proper divisors (330921110).

398454730 is a wasteful number, since it uses less digits than its factorization.

398454730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675413.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 398454730 is about 19961.3308674547. The cubic root of 398454730 is about 735.8562714083.

The spelling of 398454730 in words is "three hundred ninety-eight million, four hundred fifty-four thousand, seven hundred thirty".