39491406 has 12 divisors (see below), whose sum is σ = 85564752. Its totient is φ = 13163796.

The previous prime is 39491401. The next prime is 39491411. The reversal of 39491406 is 60419493.

It is an interprime number because it is at equal distance from previous prime (39491401) and next prime (39491411).

It is a super-2 number, since 2×39491406² = 3119142295713672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39491401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1096966 + ... + 1097001.

It is an arithmetic number, because the mean of its divisors is an integer number (7130396).

Almost surely, 2^39491406 is an apocalyptic number.

39491406 is an abundant number, since it is smaller than the sum of its proper divisors (46073346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39491406 is a wasteful number, since it uses less digits than its factorization.

39491406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193975 (or 2193972 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 39491406 is about 6284.2188058660. The cubic root of 39491406 is about 340.5395297829.

The spelling of 39491406 in words is "thirty-nine million, four hundred ninety-one thousand, four hundred six".