39956154 has 64 divisors (see below), whose sum is σ = 97790976. Its totient is φ = 10623744.

The previous prime is 39956141. The next prime is 39956209. The reversal of 39956154 is 45165993.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76137 + ... + 76659.

It is an arithmetic number, because the mean of its divisors is an integer number (1527984).

Almost surely, 2^39956154 is an apocalyptic number.

39956154 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 39956154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48895488).

39956154 is an abundant number, since it is smaller than the sum of its proper divisors (57834822).

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

39956154 is a wasteful number, since it uses less digits than its factorization.

39956154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659.

The product of its digits is 145800, while the sum is 42.

The square root of 39956154 is about 6321.0880392540. The cubic root of 39956154 is about 341.8701843072.

The spelling of 39956154 in words is "thirty-nine million, nine hundred fifty-six thousand, one hundred fifty-four".