91854739 has 2 divisors, whose sum is σ = 91854740. Its totient is φ = 91854738.

The previous prime is 91854727. The next prime is 91854769. The reversal of 91854739 is 93745819.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91854739 - 2¹⁵ = 91821971 is a prime.

It is not a weakly prime, because it can be changed into another prime (91854769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45927369 + 45927370.

It is an arithmetic number, because the mean of its divisors is an integer number (45927370).

Almost surely, 2^91854739 is an apocalyptic number.

91854739 is a deficient number, since it is larger than the sum of its proper divisors (1).

91854739 is an equidigital number, since it uses as much as digits as its factorization.

91854739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 46.

The square root of 91854739 is about 9584.0878021855. The cubic root of 91854739 is about 451.1980241596.

It can be divided in two parts, 9185 and 4739, that added together give a square (13924 = 118²).

The spelling of 91854739 in words is "ninety-one million, eight hundred fifty-four thousand, seven hundred thirty-nine".