3918722 has 4 divisors (see below), whose sum is σ = 5878086. Its totient is φ = 1959360.

The previous prime is 3918697. The next prime is 3918743. The reversal of 3918722 is 2278193.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2278193 = 113 ⋅20161.

It can be written as a sum of positive squares in only one way, i.e., 3308761 + 609961 = 1819^2 + 781^2 .

It is a super-2 number, since 2×3918722² = 30712764226568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 979679 + ... + 979682.

Almost surely, 2^3918722 is an apocalyptic number.

3918722 is a deficient number, since it is larger than the sum of its proper divisors (1959364).

3918722 is a wasteful number, since it uses less digits than its factorization.

3918722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959363.

The product of its digits is 6048, while the sum is 32.

The square root of 3918722 is about 1979.5762172748. The cubic root of 3918722 is about 157.6575663426.

The spelling of 3918722 in words is "three million, nine hundred eighteen thousand, seven hundred twenty-two".