783873990 has 128 divisors (see below), whose sum is σ = 2152120320. Its totient is φ = 202932864.

The previous prime is 783873983. The next prime is 783874019. The reversal of 783873990 is 99378387.

It is a super-2 number, since 2×783873990² = 1228916864397040200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 63 ways as a sum of consecutive naturals, for example, 2829732 + ... + 2830008.

It is an arithmetic number, because the mean of its divisors is an integer number (16813440).

Almost surely, 2^783873990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 783873990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1076060160).

783873990 is an abundant number, since it is smaller than the sum of its proper divisors (1368246330).

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

783873990 is a wasteful number, since it uses less digits than its factorization.

783873990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 783873990 is about 27997.7497310052. The cubic root of 783873990 is about 922.0378543126.

The spelling of 783873990 in words is "seven hundred eighty-three million, eight hundred seventy-three thousand, nine hundred ninety".