39979554 has 16 divisors (see below), whose sum is σ = 80030592. Its totient is φ = 13314608.

The previous prime is 39979517. The next prime is 39979559. The reversal of 39979554 is 45597993.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 39979497 and 39979506.

It is not an unprimeable number, because it can be changed into a prime (39979559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6727 + ... + 11189.

It is an arithmetic number, because the mean of its divisors is an integer number (5001912).

Almost surely, 2^39979554 is an apocalyptic number.

39979554 is an abundant number, since it is smaller than the sum of its proper divisors (40051038).

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

39979554 is a wasteful number, since it uses less digits than its factorization.

39979554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5961.

The product of its digits is 1530900, while the sum is 51.

The square root of 39979554 is about 6322.9387155025. The cubic root of 39979554 is about 341.9369091239.

The spelling of 39979554 in words is "thirty-nine million, nine hundred seventy-nine thousand, five hundred fifty-four".