1393471066 has 16 divisors (see below), whose sum is σ = 2253500928. Its totient is φ = 642423600.

The previous prime is 1393471021. The next prime is 1393471069. The reversal of 1393471066 is 6601743931.

It is a super-2 number, since 2×1393471066² = 3883523223558352712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1393471069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5730 + ... + 53101.

It is an arithmetic number, because the mean of its divisors is an integer number (140843808).

Almost surely, 2^1393471066 is an apocalyptic number.

1393471066 is a deficient number, since it is larger than the sum of its proper divisors (860029862).

1393471066 is a wasteful number, since it uses less digits than its factorization.

1393471066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59757.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 1393471066 is about 37329.2253602991. The cubic root of 1393471066 is about 1116.9472207325.

The spelling of 1393471066 in words is "one billion, three hundred ninety-three million, four hundred seventy-one thousand, sixty-six".