36499821 has 4 divisors (see below), whose sum is σ = 48666432. Its totient is φ = 24333212.

The previous prime is 36499807. The next prime is 36499823. The reversal of 36499821 is 12899463.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12899463 = 3 ⋅4299821.

It is a cyclic number.

It is not a de Polignac number, because 36499821 - 2⁵ = 36499789 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36499823) 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, 6083301 + ... + 6083306.

It is an arithmetic number, because the mean of its divisors is an integer number (12166608).

Almost surely, 2^36499821 is an apocalyptic number.

It is an amenable number.

36499821 is a deficient number, since it is larger than the sum of its proper divisors (12166611).

36499821 is a wasteful number, since it uses less digits than its factorization.

36499821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12166610.

The product of its digits is 93312, while the sum is 42.

The square root of 36499821 is about 6041.5081726337. The cubic root of 36499821 is about 331.7138295879.

The spelling of 36499821 in words is "thirty-six million, four hundred ninety-nine thousand, eight hundred twenty-one".