7400487 has 4 divisors (see below), whose sum is σ = 9867320. Its totient is φ = 4933656.

The previous prime is 7400473. The next prime is 7400489. The reversal of 7400487 is 7840047.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7840047 = 3 ⋅2613349.

It is not a de Polignac number, because 7400487 - 2¹⁰ = 7399463 is a prime.

It is a Duffinian number.

7400487 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7400489) 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, 1233412 + ... + 1233417.

It is an arithmetic number, because the mean of its divisors is an integer number (2466830).

Almost surely, 2^7400487 is an apocalyptic number.

7400487 is a deficient number, since it is larger than the sum of its proper divisors (2466833).

7400487 is a wasteful number, since it uses less digits than its factorization.

7400487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466832.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 7400487 is about 2720.3836126547. The cubic root of 7400487 is about 194.8737907840.

It can be divided in two parts, 7400 and 487, that added together give a palindrome (7887).

The spelling of 7400487 in words is "seven million, four hundred thousand, four hundred eighty-seven".