396140260 has 12 divisors (see below), whose sum is σ = 831894588. Its totient is φ = 158456096.

The previous prime is 396140257. The next prime is 396140263. The reversal of 396140260 is 62041693.

It is an interprime number because it is at equal distance from previous prime (396140257) and next prime (396140263).

It can be written as a sum of positive squares in 2 ways, for example, as 152967424 + 243172836 = 12368^2 + 15594^2 .

It is not an unprimeable number, because it can be changed into a prime (396140263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9903487 + ... + 9903526.

It is an arithmetic number, because the mean of its divisors is an integer number (69324549).

Almost surely, 2^396140260 is an apocalyptic number.

It is an amenable number.

396140260 is an abundant number, since it is smaller than the sum of its proper divisors (435754328).

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

396140260 is a wasteful number, since it uses less digits than its factorization.

396140260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19807022 (or 19807020 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 396140260 is about 19903.2725952292. The cubic root of 396140260 is about 734.4287353105.

The spelling of 396140260 in words is "three hundred ninety-six million, one hundred forty thousand, two hundred sixty".