91473039 has 48 divisors (see below), whose sum is σ = 161021952. Its totient is φ = 48847104.

The previous prime is 91472999. The next prime is 91473059. The reversal of 91473039 is 93037419.

It is not a de Polignac number, because 91473039 - 2¹¹ = 91470991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91472994 and 91473012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91473059) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 238642 + ... + 239024.

It is an arithmetic number, because the mean of its divisors is an integer number (3354624).

Almost surely, 2^91473039 is an apocalyptic number.

91473039 is a deficient number, since it is larger than the sum of its proper divisors (69548913).

91473039 is a wasteful number, since it uses less digits than its factorization.

91473039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 91473039 is about 9564.1538569808. The cubic root of 91473039 is about 450.5721758726.

The spelling of 91473039 in words is "ninety-one million, four hundred seventy-three thousand, thirty-nine".