1393990034 has 4 divisors (see below), whose sum is σ = 2090985054. Its totient is φ = 696995016.

The previous prime is 1393990027. The next prime is 1393990057. The reversal of 1393990034 is 4300993931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1390917025 + 3073009 = 37295^2 + 1753^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1393989973 and 1393990000.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348497507 + ... + 348497510.

Almost surely, 2^1393990034 is an apocalyptic number.

1393990034 is a deficient number, since it is larger than the sum of its proper divisors (696995020).

1393990034 is an equidigital number, since it uses as much as digits as its factorization.

1393990034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696995019.

The product of its (nonzero) digits is 78732, while the sum is 41.

The square root of 1393990034 is about 37336.1759423752. The cubic root of 1393990034 is about 1117.0858644244.

The spelling of 1393990034 in words is "one billion, three hundred ninety-three million, nine hundred ninety thousand, thirty-four".