99540737 has 4 divisors (see below), whose sum is σ = 99578436. Its totient is φ = 99503040.

The previous prime is 99540719. The next prime is 99540773. The reversal of 99540737 is 73704599.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73704599 = 6299 ⋅11701.

It can be written as a sum of positive squares in 2 ways, for example, as 38950081 + 60590656 = 6241^2 + 7784^2 .

It is a cyclic number.

It is not a de Polignac number, because 99540737 - 2¹² = 99536641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99540787) 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, 14564 + ... + 20277.

It is an arithmetic number, because the mean of its divisors is an integer number (24894609).

Almost surely, 2^99540737 is an apocalyptic number.

It is an amenable number.

99540737 is a deficient number, since it is larger than the sum of its proper divisors (37699).

99540737 is a wasteful number, since it uses less digits than its factorization.

99540737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37698.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 99540737 is about 9977.0104239697. The cubic root of 99540737 is about 463.4472227781.

The spelling of 99540737 in words is "ninety-nine million, five hundred forty thousand, seven hundred thirty-seven".