1390066338 has 32 divisors (see below), whose sum is σ = 2878508160. Its totient is φ = 446987520.

The previous prime is 1390066297. The next prime is 1390066339. The reversal of 1390066338 is 8336600931.

It is a junction number, because it is equal to n+sod(n) for n = 1390066296 and 1390066305.

It is not an unprimeable number, because it can be changed into a prime (1390066339) 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, 249018 + ... + 254538.

It is an arithmetic number, because the mean of its divisors is an integer number (89953380).

Almost surely, 2^1390066338 is an apocalyptic number.

1390066338 is an abundant number, since it is smaller than the sum of its proper divisors (1488441822).

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

1390066338 is a wasteful number, since it uses less digits than its factorization.

1390066338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7002.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 1390066338 is about 37283.5934158713. The cubic root of 1390066338 is about 1116.0367837081.

The spelling of 1390066338 in words is "one billion, three hundred ninety million, sixty-six thousand, three hundred thirty-eight".