91948007 has 4 divisors (see below), whose sum is σ = 92329776. Its totient is φ = 91566240.

The previous prime is 91947971. The next prime is 91948013. The reversal of 91948007 is 70084919.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91948007 - 2¹² = 91943911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91948037) 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, 190523 + ... + 191004.

It is an arithmetic number, because the mean of its divisors is an integer number (23082444).

Almost surely, 2^91948007 is an apocalyptic number.

91948007 is a deficient number, since it is larger than the sum of its proper divisors (381769).

91948007 is a wasteful number, since it uses less digits than its factorization.

91948007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381768.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 91948007 is about 9588.9523411059. The cubic root of 91948007 is about 451.3506858605.

The spelling of 91948007 in words is "ninety-one million, nine hundred forty-eight thousand, seven".