398263007 has 8 divisors (see below), whose sum is σ = 409017600. Its totient is φ = 387603544.

The previous prime is 398262989. The next prime is 398263037. The reversal of 398263007 is 700362893.

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 398263007 - 2¹⁴ = 398246623 is a prime.

It is a super-2 number, since 2×398263007² = 317226845489364098, 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 (398263037) 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, 15257 + ... + 32082.

It is an arithmetic number, because the mean of its divisors is an integer number (51127200).

Almost surely, 2^398263007 is an apocalyptic number.

398263007 is a deficient number, since it is larger than the sum of its proper divisors (10754593).

398263007 is a wasteful number, since it uses less digits than its factorization.

398263007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47565.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 398263007 is about 19956.5279294771. The cubic root of 398263007 is about 735.7382293865.

The spelling of 398263007 in words is "three hundred ninety-eight million, two hundred sixty-three thousand, seven".