7405491 has 8 divisors (see below), whose sum is σ = 9898240. Its totient is φ = 4924872.

The previous prime is 7405487. The next prime is 7405501. The reversal of 7405491 is 1945047.

It is a happy number.

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

It is not a de Polignac number, because 7405491 - 2² = 7405487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7405451) 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, 1495 + ... + 4128.

It is an arithmetic number, because the mean of its divisors is an integer number (1237280).

Almost surely, 2^7405491 is an apocalyptic number.

7405491 is a deficient number, since it is larger than the sum of its proper divisors (2492749).

7405491 is a wasteful number, since it uses less digits than its factorization.

7405491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6065.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 7405491 is about 2721.3031804634. The cubic root of 7405491 is about 194.9177036032.

The spelling of 7405491 in words is "seven million, four hundred five thousand, four hundred ninety-one".