398749750 has 96 divisors (see below), whose sum is σ = 889697952. Its totient is φ = 133358400.

The previous prime is 398749727. The next prime is 398749753. The reversal of 398749750 is 57947893.

It is a super-3 number, since 3×398749750³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398749753) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 526372 + ... + 527128.

It is an arithmetic number, because the mean of its divisors is an integer number (9267687).

Almost surely, 2^398749750 is an apocalyptic number.

398749750 is an abundant number, since it is smaller than the sum of its proper divisors (490948202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398749750 is a wasteful number, since it uses less digits than its factorization.

398749750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 52.

The square root of 398749750 is about 19968.7192879263. The cubic root of 398749750 is about 736.0378384670.

The spelling of 398749750 in words is "three hundred ninety-eight million, seven hundred forty-nine thousand, seven hundred fifty".