91061446 has 16 divisors (see below), whose sum is σ = 161141760. Its totient is φ = 37767240.

The previous prime is 91061437. The next prime is 91061447. The reversal of 91061446 is 64416019.

It is a super-2 number, since 2×91061446² = 16584373895221832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91061447) 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, 104476 + ... + 105343.

It is an arithmetic number, because the mean of its divisors is an integer number (10071360).

Almost surely, 2^91061446 is an apocalyptic number.

91061446 is a deficient number, since it is larger than the sum of its proper divisors (70080314).

91061446 is a wasteful number, since it uses less digits than its factorization.

91061446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209859.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 91061446 is about 9542.6121161871. The cubic root of 91061446 is about 449.8953600318.

The spelling of 91061446 in words is "ninety-one million, sixty-one thousand, four hundred forty-six".