3621974399 has 8 divisors (see below), whose sum is σ = 3712381008. Its totient is φ = 3531666240.

The previous prime is 3621974371. The next prime is 3621974413. The reversal of 3621974399 is 9934791263.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3621974399 - 2¹⁶ = 3621908863 is a prime.

It is a super-2 number, since 2×3621974399² = 26237397094022822402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3621974399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621974309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52889 + ... + 100205.

It is an arithmetic number, because the mean of its divisors is an integer number (464047626).

Almost surely, 2^3621974399 is an apocalyptic number.

3621974399 is a deficient number, since it is larger than the sum of its proper divisors (90406609).

3621974399 is a wasteful number, since it uses less digits than its factorization.

3621974399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49225.

The product of its digits is 2204496, while the sum is 53.

The square root of 3621974399 is about 60182.8414001865. The cubic root of 3621974399 is about 1535.7309097511.

The spelling of 3621974399 in words is "three billion, six hundred twenty-one million, nine hundred seventy-four thousand, three hundred ninety-nine".