1394052490 has 12 divisors (see below), whose sum is σ = 2509507026. Its totient is φ = 557573768.

The previous prime is 1394052487. The next prime is 1394052503. The reversal of 1394052490 is 942504931.

It can be written as a sum of positive squares in only one way, i.e., 1254647241 + 139405249 = 35421^2 + 11807^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112167 + ... + 123973.

Almost surely, 2^1394052490 is an apocalyptic number.

1394052490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1394052490 is a deficient number, since it is larger than the sum of its proper divisors (1115454536).

1394052490 is an frugal number, since it uses more digits than its factorization.

1394052490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23621 (or 11814 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 1394052490 is about 37337.0123336081. The cubic root of 1394052490 is about 1117.1025473923.

It can be divided in two parts, 13940 and 52490, that added together give a triangular number (66430 = T₃₆₄).

The spelling of 1394052490 in words is "one billion, three hundred ninety-four million, fifty-two thousand, four hundred ninety".