91440062 has 8 divisors (see below), whose sum is σ = 156754416. Its totient is φ = 39188592.

The previous prime is 91440043. The next prime is 91440067. The reversal of 91440062 is 26004419.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×91440062² = 16722569877127688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91440067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3265703 + ... + 3265730.

It is an arithmetic number, because the mean of its divisors is an integer number (19594302).

Almost surely, 2^91440062 is an apocalyptic number.

91440062 is a deficient number, since it is larger than the sum of its proper divisors (65314354).

91440062 is a wasteful number, since it uses less digits than its factorization.

91440062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6531442.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 91440062 is about 9562.4297121600. The cubic root of 91440062 is about 450.5180240165.

The spelling of 91440062 in words is "ninety-one million, four hundred forty thousand, sixty-two".