93721481 has 16 divisors (see below), whose sum is σ = 114795264. Its totient is φ = 74758464.

The previous prime is 93721477. The next prime is 93721487. The reversal of 93721481 is 18412739.

It is not a de Polignac number, because 93721481 - 2² = 93721477 is a prime.

It is a super-2 number, since 2×93721481² = 17567432001666722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (93721487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1910 + ... + 13823.

It is an arithmetic number, because the mean of its divisors is an integer number (7174704).

Almost surely, 2^93721481 is an apocalyptic number.

It is an amenable number.

93721481 is a deficient number, since it is larger than the sum of its proper divisors (21073783).

93721481 is a wasteful number, since it uses less digits than its factorization.

93721481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15800.

The product of its digits is 12096, while the sum is 35.

The square root of 93721481 is about 9680.9855386732. The cubic root of 93721481 is about 454.2340791254.

The spelling of 93721481 in words is "ninety-three million, seven hundred twenty-one thousand, four hundred eighty-one".