40697400 has 48 divisors (see below), whose sum is σ = 126163800. Its totient is φ = 10852480.

The previous prime is 40697387. The next prime is 40697401. The reversal of 40697400 is 479604.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40697401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33315 + ... + 34514.

Almost surely, 2^40697400 is an apocalyptic number.

40697400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40697400 is an abundant number, since it is smaller than the sum of its proper divisors (85466400).

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

40697400 is a wasteful number, since it uses less digits than its factorization.

40697400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67848 (or 67839 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 40697400 is about 6379.4513870708. The cubic root of 40697400 is about 343.9713109300.

The spelling of 40697400 in words is "forty million, six hundred ninety-seven thousand, four hundred".