1390197950 has 48 divisors (see below), whose sum is σ = 2789620560. Its totient is φ = 513477120.

The previous prime is 1390197917. The next prime is 1390197973. The reversal of 1390197950 is 597910931.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29621 + ... + 60479.

It is an arithmetic number, because the mean of its divisors is an integer number (58117095).

Almost surely, 2^1390197950 is an apocalyptic number.

1390197950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1390197950 is an abundant number, since it is smaller than the sum of its proper divisors (1399422610).

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

1390197950 is a wasteful number, since it uses less digits than its factorization.

1390197950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30941 (or 30936 counting only the distinct ones).

The product of its (nonzero) digits is 76545, while the sum is 44.

The square root of 1390197950 is about 37285.3583863693. The cubic root of 1390197950 is about 1116.0720048564.

The spelling of 1390197950 in words is "one billion, three hundred ninety million, one hundred ninety-seven thousand, nine hundred fifty".