398623796 has 6 divisors (see below), whose sum is σ = 697591650. Its totient is φ = 199311896.

The previous prime is 398623793. The next prime is 398623807. The reversal of 398623796 is 697326893.

It can be written as a sum of positive squares in only one way, i.e., 398561296 + 62500 = 19964^2 + 250^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398623793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49827971 + ... + 49827978.

It is an arithmetic number, because the mean of its divisors is an integer number (116265275).

Almost surely, 2^398623796 is an apocalyptic number.

It is an amenable number.

398623796 is a deficient number, since it is larger than the sum of its proper divisors (298967854).

398623796 is a wasteful number, since it uses less digits than its factorization.

398623796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99655953 (or 99655951 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 53.

The square root of 398623796 is about 19965.5652562105. The cubic root of 398623796 is about 735.9603323178.

The spelling of 398623796 in words is "three hundred ninety-eight million, six hundred twenty-three thousand, seven hundred ninety-six".