997834950 has 240 divisors, whose sum is σ = 3226100064. Its totient is φ = 223948800.

The previous prime is 997834933. The next prime is 997834973. The reversal of 997834950 is 59438799.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1729062 + ... + 1729638.

Almost surely, 2^997834950 is an apocalyptic number.

997834950 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 997834950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1613050032).

997834950 is an abundant number, since it is smaller than the sum of its proper divisors (2228265114).

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

997834950 is a wasteful number, since it uses less digits than its factorization.

997834950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The square root of 997834950 is about 31588.5256066186. The cubic root of 997834950 is about 999.2777952125.

The spelling of 997834950 in words is "nine hundred ninety-seven million, eight hundred thirty-four thousand, nine hundred fifty".