7479638 has 4 divisors (see below), whose sum is σ = 11219460. Its totient is φ = 3739818.

The previous prime is 7479631. The next prime is 7479683. The reversal of 7479638 is 8369747.

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

It is a super-2 number, since 2×7479638² = 111889969222088, which contains 22 as substring.

It is a d-powerful number, because it can be written as 7⁴ + 4² + 7⁸ + 9 + 6⁸ + 3³ + 8⁵ .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7479631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1869908 + ... + 1869911.

It is an arithmetic number, because the mean of its divisors is an integer number (2804865).

Almost surely, 2^7479638 is an apocalyptic number.

7479638 is a deficient number, since it is larger than the sum of its proper divisors (3739822).

7479638 is a wasteful number, since it uses less digits than its factorization.

7479638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3739821.

The product of its digits is 254016, while the sum is 44.

The square root of 7479638 is about 2734.8926852804. The cubic root of 7479638 is about 195.5660780944.

The spelling of 7479638 in words is "seven million, four hundred seventy-nine thousand, six hundred thirty-eight".