396749758 has 4 divisors (see below), whose sum is σ = 595124640. Its totient is φ = 198374878.

The previous prime is 396749753. The next prime is 396749767. The reversal of 396749758 is 857947693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 857947693 = 18541 ⋅46273.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396749753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99187438 + ... + 99187441.

It is an arithmetic number, because the mean of its divisors is an integer number (148781160).

Almost surely, 2^396749758 is an apocalyptic number.

396749758 is a deficient number, since it is larger than the sum of its proper divisors (198374882).

396749758 is a wasteful number, since it uses less digits than its factorization.

396749758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198374881.

The product of its digits is 11430720, while the sum is 58.

The square root of 396749758 is about 19918.5782123122. The cubic root of 396749758 is about 734.8052042129.

The spelling of 396749758 in words is "three hundred ninety-six million, seven hundred forty-nine thousand, seven hundred fifty-eight".