7444991 has 8 divisors (see below), whose sum is σ = 7745664. Its totient is φ = 7148160.

The previous prime is 7444981. The next prime is 7444993. The reversal of 7444991 is 1994447.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7444991 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7444993) 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, 3371 + ... + 5123.

It is an arithmetic number, because the mean of its divisors is an integer number (968208).

Almost surely, 2^7444991 is an apocalyptic number.

7444991 is a deficient number, since it is larger than the sum of its proper divisors (300673).

7444991 is a wasteful number, since it uses less digits than its factorization.

7444991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921.

The product of its digits is 36288, while the sum is 38.

The square root of 7444991 is about 2728.5510807020. The cubic root of 7444991 is about 195.2636451374.

The spelling of 7444991 in words is "seven million, four hundred forty-four thousand, nine hundred ninety-one".