396740523 has 16 divisors (see below), whose sum is σ = 539465472. Its totient is φ = 259284000.

The previous prime is 396740521. The next prime is 396740527. The reversal of 396740523 is 325047693.

It is not a de Polignac number, because 396740523 - 2¹ = 396740521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (396740521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53428 + ... + 60398.

It is an arithmetic number, because the mean of its divisors is an integer number (33716592).

Almost surely, 2^396740523 is an apocalyptic number.

396740523 is a deficient number, since it is larger than the sum of its proper divisors (142724949).

396740523 is a wasteful number, since it uses less digits than its factorization.

396740523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7346.

The product of its (nonzero) digits is 136080, while the sum is 39.

The square root of 396740523 is about 19918.3463922084. The cubic root of 396740523 is about 734.7995029041.

The spelling of 396740523 in words is "three hundred ninety-six million, seven hundred forty thousand, five hundred twenty-three".