39951342 has 48 divisors (see below), whose sum is σ = 89631360. Its totient is φ = 12851136.

The previous prime is 39951323. The next prime is 39951349. The reversal of 39951342 is 24315993.

It is a happy number.

It is a super-2 number, since 2×39951342² = 3192219455201928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39951297 and 39951306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39951349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148384 + ... + 148652.

It is an arithmetic number, because the mean of its divisors is an integer number (1867320).

Almost surely, 2^39951342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39951342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44815680).

39951342 is an abundant number, since it is smaller than the sum of its proper divisors (49680018).

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

39951342 is a wasteful number, since it uses less digits than its factorization.

39951342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 534 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 39951342 is about 6320.7073971194. The cubic root of 39951342 is about 341.8564597182.

The spelling of 39951342 in words is "thirty-nine million, nine hundred fifty-one thousand, three hundred forty-two".