7406491 has 4 divisors (see below), whose sum is σ = 7489800. Its totient is φ = 7323184.

The previous prime is 7406479. The next prime is 7406537. The reversal of 7406491 is 1946047.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1946047 = 1039 ⋅1873.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7406491 is a prime.

It is a super-2 number, since 2×7406491² = 109712217866162, which contains 22 as substring.

It is a Duffinian number.

7406491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7406411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41521 + ... + 41698.

It is an arithmetic number, because the mean of its divisors is an integer number (1872450).

Almost surely, 2^7406491 is an apocalyptic number.

7406491 is a deficient number, since it is larger than the sum of its proper divisors (83309).

7406491 is an equidigital number, since it uses as much as digits as its factorization.

7406491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83308.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 7406491 is about 2721.4869097609. The cubic root of 7406491 is about 194.9264767748.

The spelling of 7406491 in words is "seven million, four hundred six thousand, four hundred ninety-one".