3720399 has 8 divisors (see below), whose sum is σ = 5252400. Its totient is φ = 2334336.

The previous prime is 3720397. The next prime is 3720401. The reversal of 3720399 is 9930273.

It is an interprime number because it is at equal distance from previous prime (3720397) and next prime (3720401).

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

It is not a de Polignac number, because 3720399 - 2¹ = 3720397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3720391) 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, 36424 + ... + 36525.

It is an arithmetic number, because the mean of its divisors is an integer number (656550).

Almost surely, 2^3720399 is an apocalyptic number.

3720399 is a deficient number, since it is larger than the sum of its proper divisors (1532001).

3720399 is a wasteful number, since it uses less digits than its factorization.

3720399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72969.

The product of its (nonzero) digits is 10206, while the sum is 33.

The square root of 3720399 is about 1928.8335853567. The cubic root of 3720399 is about 154.9517574457.

The spelling of 3720399 in words is "three million, seven hundred twenty thousand, three hundred ninety-nine".