40169402 has 32 divisors (see below), whose sum is σ = 78527232. Its totient is φ = 14955264.

The previous prime is 40169399. The next prime is 40169407. The reversal of 40169402 is 20496104.

It is a super-2 number, since 2×40169402² = 3227161714075208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a zygodrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (40169407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3398 + ... + 9585.

It is an arithmetic number, because the mean of its divisors is an integer number (2453976).

Almost surely, 2^40169402 is an apocalyptic number.

40169402 is a deficient number, since it is larger than the sum of its proper divisors (38357830).

40169402 is a wasteful number, since it uses less digits than its factorization.

40169402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13022.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 40169402 is about 6337.9335749123. The cubic root of 40169402 is about 342.4772982982.

The spelling of 40169402 in words is "forty million, one hundred sixty-nine thousand, four hundred two".