40154994 has 32 divisors (see below), whose sum is σ = 97346880. Its totient is φ = 12168000.

The previous prime is 40154981. The next prime is 40155007. The reversal of 40154994 is 49945104.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40154981) and next prime (40155007).

It is a super-2 number, since 2×40154994² = 3224847086280072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33207 + ... + 34394.

It is an arithmetic number, because the mean of its divisors is an integer number (3042090).

Almost surely, 2^40154994 is an apocalyptic number.

40154994 is an abundant number, since it is smaller than the sum of its proper divisors (57191886).

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

40154994 is a wasteful number, since it uses less digits than its factorization.

40154994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67623 (or 67617 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 40154994 is about 6336.7968248951. The cubic root of 40154994 is about 342.4363467053.

It can be divided in two parts, 4015 and 4994, that added together give a palindrome (9009).

The spelling of 40154994 in words is "forty million, one hundred fifty-four thousand, nine hundred ninety-four".