1394207090 has 8 divisors (see below), whose sum is σ = 2509572780. Its totient is φ = 557682832.

The previous prime is 1394207069. The next prime is 1394207117. The reversal of 1394207090 is 907024931.

It can be written as a sum of positive squares in 2 ways, for example, as 1352694841 + 41512249 = 36779^2 + 6443^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1394207090.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69710345 + ... + 69710364.

Almost surely, 2^1394207090 is an apocalyptic number.

1394207090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1394207090 is a deficient number, since it is larger than the sum of its proper divisors (1115365690).

1394207090 is a wasteful number, since it uses less digits than its factorization.

1394207090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139420716.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 1394207090 is about 37339.0826079056. The cubic root of 1394207090 is about 1117.1438413108.

The spelling of 1394207090 in words is "one billion, three hundred ninety-four million, two hundred seven thousand, ninety".