396938945 has 16 divisors (see below), whose sum is σ = 535272192. Its totient is φ = 280378560.

The previous prime is 396938939. The next prime is 396938947. The reversal of 396938945 is 549839693.

It is not a de Polignac number, because 396938945 - 2¹⁰ = 396937921 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (396938947) 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, 131261 + ... + 134250.

It is an arithmetic number, because the mean of its divisors is an integer number (33454512).

Almost surely, 2^396938945 is an apocalyptic number.

It is an amenable number.

396938945 is a deficient number, since it is larger than the sum of its proper divisors (138333247).

396938945 is a wasteful number, since it uses less digits than its factorization.

396938945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265552.

The product of its digits is 6298560, while the sum is 56.

The square root of 396938945 is about 19923.3266549540. The cubic root of 396938945 is about 734.9219810133.

The spelling of 396938945 in words is "three hundred ninety-six million, nine hundred thirty-eight thousand, nine hundred forty-five".