3732391 has 4 divisors (see below), whose sum is σ = 4019512. Its totient is φ = 3445272.

The previous prime is 3732389. The next prime is 3732397. The reversal of 3732391 is 1932373.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3732391 - 2¹ = 3732389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3732397) 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, 143541 + ... + 143566.

It is an arithmetic number, because the mean of its divisors is an integer number (1004878).

Almost surely, 2^3732391 is an apocalyptic number.

3732391 is a deficient number, since it is larger than the sum of its proper divisors (287121).

3732391 is a wasteful number, since it uses less digits than its factorization.

3732391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287120.

The product of its digits is 3402, while the sum is 28.

The square root of 3732391 is about 1931.9396988519. The cubic root of 3732391 is about 155.1180647463.

The spelling of 3732391 in words is "three million, seven hundred thirty-two thousand, three hundred ninety-one".