58991890 has 16 divisors (see below), whose sum is σ = 107161560. Its totient is φ = 23379840.

The previous prime is 58991879. The next prime is 58991893. The reversal of 58991890 is 9819985.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 31460881 + 27531009 = 5609^2 + 5247^2 .

It is a super-3 number, since 3×58991890³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (58991893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25971 + ... + 28150.

Almost surely, 2^58991890 is an apocalyptic number.

58991890 is a deficient number, since it is larger than the sum of its proper divisors (48169670).

58991890 is a wasteful number, since it uses less digits than its factorization.

58991890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54237.

The product of its (nonzero) digits is 233280, while the sum is 49.

The square root of 58991890 is about 7680.6178136918. The cubic root of 58991890 is about 389.2818033683.

The spelling of 58991890 in words is "fifty-eight million, nine hundred ninety-one thousand, eight hundred ninety".