83997850 has 36 divisors (see below), whose sum is σ = 165995514. Its totient is φ = 31617280.

The previous prime is 83997847. The next prime is 83997869. The reversal of 83997850 is 5879938.

It can be written as a sum of positive squares in 9 ways, for example, as 30459361 + 53538489 = 5519^2 + 7317^2 .

It is a junction number, because it is equal to n+sod(n) for n = 83997794 and 83997803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11544 + ... + 17356.

Almost surely, 2^83997850 is an apocalyptic number.

83997850 is a deficient number, since it is larger than the sum of its proper divisors (81997664).

83997850 is a wasteful number, since it uses less digits than its factorization.

83997850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5859 (or 5837 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 83997850 is about 9165.0340970451. The cubic root of 83997850 is about 437.9481774624.

It can be divided in two parts, 839 and 97850, that added together give a palindrome (98689).

The spelling of 83997850 in words is "eighty-three million, nine hundred ninety-seven thousand, eight hundred fifty".